@phdthesis{WeissenbergergebKunz2023, author = {Weissenberger [geb. Kunz], Manuela-Hermina}, title = {Adenoviraler Gentransfer von SOX9 zur chondrogenen Differenzierung von humanen mesenchymalen Stammzellen}, doi = {10.25972/OPUS-32122}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-321221}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2023}, abstract = {Der adenovirale SOX9-Gentransfer induziert nach 3-w{\"o}chiger in vitro Pelletkultur die chondrogene Differenzierung humaner mesenchymaler Stammzellen in Pelletkultur wirksamer als der TGFB1 Gentransfer mit geringerer Chondrozytenhypertrophie. Eine solche Technologie k{\"o}nnte zuk{\"u}nftig in vivo die Bildung von stabilerem hyalinem Knorpelregeneratgewebe erm{\"o}glichen.}, subject = {Hyaliner Knorpel}, language = {de} } @phdthesis{Stroemsdoerfer2023, author = {Str{\"o}msd{\"o}rfer, Johanna}, title = {Einfluss von Vibrationstraining auf k{\"o}rperliche Leistungsf{\"a}higkeit, Alltagsaktivit{\"a}t und Lebensqualit{\"a}t von Patienten mit monoklonaler Gammopathie}, doi = {10.25972/OPUS-32089}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-320895}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2023}, abstract = {Patienten mit monoklonaler Gammopathie unklarer Signifikanz haben ein erh{\"o}htes Risiko an einer Osteoporose, Knochenbr{\"u}chen oder einer reduzierten Leistungsf{\"a}higkeit zu leiden. Bisher hat sich noch keine Therapie zur Pr{\"a}vention dieser Komplikationen etabliert. Das Ziel unserer Studie war es, WBV als eine m{\"o}gliche Trainingsmethode zu pr{\"u}fen und den Einfluss auf die Fitness, Alltagsaktivit{\"a}t und Lebensqualit{\"a}t von Patienten mit monoklonaler Gammopathie zu untersuchen. Hierf{\"u}r haben 15 Probanden mit MGUS/SMM ein Trainingsprogramm {\"u}ber 3 bzw. 6 Monate mit zwei Trainingseinheiten pro Woche f{\"u}r jeweils 30 Minuten absolviert. Die k{\"o}rperliche Leistungsf{\"a}higkeit wurde anhand verschiedener Funktionstests sowie der Erhebung von K{\"o}rpermaßen betrachtet. Die Alltagsaktivit{\"a}t wurde mittels Fitnesstrackern untersucht. Anhand von 3 verschiedenen Frageb{\"o}gen wurde zudem der Einfluss auf die Lebensqualit{\"a}t der Probanden durch das Training ermittelt. Zusammenfassend zeigte sich eine deutliche Verbesserung der Fitness und Ausdauer der Probanden, die Alltagsaktivit{\"a}t und die Lebensqualit{\"a}t wurden nicht durch das Vibrationstraining beeinflusst.}, subject = {Vibrationstraining}, language = {de} } @article{EbertWeissenbergerBraunetal.2022, author = {Ebert, Regina and Weissenberger, Manuel and Braun, Clemens and Wagenbrenner, Mike and Herrmann, Marietta and M{\"u}ller-Deubert, Sigrid and Krug, Melanie and Jakob, Franz and Rudert, Maximilian}, title = {Impaired regenerative capacity and senescence-associated secretory phenotype in mesenchymal stromal cells from samples of patients with aseptic joint arthroplasty loosening}, series = {Journal of Orthopaedic Research}, volume = {40}, journal = {Journal of Orthopaedic Research}, number = {2}, doi = {10.1002/jor.25041}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-238963}, pages = {513 -- 523}, year = {2022}, abstract = {Aseptic loosening of total hip and knee joint replacements is the most common indication for revision surgery after primary hip and knee arthroplasty. Research suggests that exposure and uptake of wear by mesenchymal stromal cells (MSC) and macrophages results in the secretion of proinflammatory cytokines and local osteolysis, but also impaired cell viability and regenerative capacity of MSC. Therefore, this in vitro study compared the regenerative and differentiation capacity of MSC derived from patients undergoing primary total hip arthroplasty (MSCprim) to MSC derived from patients undergoing revision surgery after aseptic loosening of total hip and knee joint implants (MSCrev). Regenerative capacity was examined by measuring the cumulative population doubling (CPD) in addition to the number of passages until cells stopped proliferating. Osteogenesis and adipogenesis in monolayer cultures were assessed using histological stainings. Furthermore, RT-PCR was performed to evaluate the relative expression of osteogenic and adipogenic marker genes as well as the expression of markers for a senescence-associated secretory phenotype (SASP). MSCrev possessed a limited regenerative capacity in comparison to MSCprim. Interestingly, MSCrev also showed an impaired osteogenic and adipogenic differentiation capacity compared to MSCprim and displayed a SASP early after isolation. Whether this is the cause or the consequence of the aseptic loosening of total joint implants remains unclear. Future research should focus on the identification of specific cell markers on MSCprim, which may influence complication rates such as aseptic loosening of total joint arthroplasty to further individualize and optimize total joint arthroplasty.}, language = {en} } @article{WeiderSchlagenhaufSeefried2022, author = {Weider, Margareta and Schlagenhauf, Ulrich and Seefried, Lothar}, title = {Oral health status of adult hypophosphatasia patients: A cross-sectional study}, series = {Journal of Clinical Periodontology}, volume = {49}, journal = {Journal of Clinical Periodontology}, number = {12}, doi = {10.1111/jcpe.13718}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-293777}, pages = {1253 -- 1261}, year = {2022}, abstract = {Aim This study evaluated the oral health status of adult patients with hypophosphatasia (HPP). Materials and Methods Parameters of oral health assessment comprised decayed/missing/filled teeth (DMFT) index, probing pocket depth and clinical attachment level (CAL) as well as documentation of tooth loss and periodontal health status according to CCD/AAP criteria. Findings were compared with national reference data (DMS V survey) reporting oral health status in age-related controls. Within-group comparisons were made between the HPP patients harbouring one versus two alkaline phosphatase liver/bone/kidney type (ALPL) gene variants. Results Of 80 HPP patients (64 female) with a mean age of 46.4 years (range 24-78) and one (n = 55) or two (n = 18) variants (n = 7 lacking testing) within the ALPL gene, those with two variants displayed substantially higher tooth loss rate (14.0 ± 9.3) than those affected by only one ALPL variant (4.1 ± 5.4), who did not differ substantially from healthy DMS V controls. While DMFT score and severe periodontal diseases (PDs) of HPP patients with one variant only increased with progressing age, the two-variant sub-cohort age independently exhibited increased DMFT scores and a higher rate of severe PDs. Conclusions HPP patients affected by two variants of the ALPL gene exhibited a higher risk of periodontitis and tooth loss than the general population, while patients with one variant developed clinically relevant oral disease symptoms with progressing ageing.}, language = {en} } @article{KaiserBrambrinkBenditzetal.2022, author = {Kaiser, Moritz and Brambrink, Sara and Benditz, Achim and Achenbach, Leonard and Gehentges, Matthias and K{\"o}nig, Matthias Alexander}, title = {Increase in lower limb strength after multimodal pain management in patients with low back pain}, series = {Medicina}, volume = {58}, journal = {Medicina}, number = {7}, issn = {1648-9144}, doi = {10.3390/medicina58070837}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-284264}, year = {2022}, abstract = {Background and Objectives: The aim of the present study was to evaluate the efficacy of a multimodal pain therapy (MPM) regarding the objective parameter muscle strength of segment-dependent lower limb muscle groups before and after such a treatment. Materials and Methods: 52 patients with a history of low back pain and/or leg pain received standardized multimodal pain management. Strength of segment indicating lower limb muscles were assessed for each patient before and after ten days of treatment by handheld dynamometry. Results: Overall strength increased significantly from 23.6 kg ± 6.6 prior to treatment to 25.4 ± 7.3 after treatment, p ≤ 0.001. All muscle groups significantly increased in strength with exception of great toe extensors. Conclusions: Despite lower basic strength values at the beginning of treatment, all investigated muscle groups, except for the great toe extensors, showed a significant increase of overall strength after completion of the multimodal pain management concept. Increased overall strength could help with avoiding further need of medical care by supporting patients' autonomy in daily life activities, as well as maintaining working abilities. Thus, our study is the first to show a significant positive influence on lower limb strength in patients with low back pain after a conservative MPM program.}, language = {en} } @article{LiedertNemitzHaffnerLuntzeretal.2020, author = {Liedert, Astrid and Nemitz, Claudia and Haffner-Luntzer, Melanie and Schick, Fabian and Jakob, Franz and Ignatius, Anita}, title = {Effects of estrogen receptor and Wnt signaling activation on mechanically induced bone formation in a mouse model of postmenopausal bone loss}, series = {International Journal of Molecular Sciences}, volume = {21}, journal = {International Journal of Molecular Sciences}, number = {21}, issn = {1422-0067}, doi = {10.3390/ijms21218301}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-285487}, year = {2020}, abstract = {In the adult skeleton, bone remodeling is required to replace damaged bone and functionally adapt bone mass and structure according to the mechanical requirements. It is regulated by multiple endocrine and paracrine factors, including hormones and growth factors, which interact in a coordinated manner. Because the response of bone to mechanical signals is dependent on functional estrogen receptor (ER) and Wnt/β-catenin signaling and is impaired in postmenopausal osteoporosis by estrogen deficiency, it is of paramount importance to elucidate the underlying mechanisms as a basis for the development of new strategies in the treatment of osteoporosis. The present study aimed to investigate the effectiveness of the activation of the ligand-dependent ER and the Wnt/β-catenin signal transduction pathways on mechanically induced bone formation using ovariectomized mice as a model of postmenopausal bone loss. We demonstrated that both pathways interact in the regulation of bone mass adaption in response to mechanical loading and that the activation of Wnt/β-catenin signaling considerably increased mechanically induced bone formation, whereas the effects of estrogen treatment strictly depended on the estrogen status in the mice.}, language = {en} } @article{HerrmannHildebrandMenzeletal.2019, author = {Herrmann, Marietta and Hildebrand, Maria and Menzel, Ursula and Fahy, Niamh and Alini, Mauro and Lang, Siegmund and Benneker, Lorin and Verrier, Sophie and Stoddart, Martin J. and Bara, Jennifer J.}, title = {Phenotypic characterization of bone marrow mononuclear cells and derived stromal cell populations from human iliac crest, vertebral body and femoral head}, series = {International Journal of Molecular Sciences}, volume = {20}, journal = {International Journal of Molecular Sciences}, number = {14}, issn = {1422-0067}, doi = {10.3390/ijms20143454}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-285054}, year = {2019}, abstract = {(1) In vitro, bone marrow-derived stromal cells (BMSCs) demonstrate inter-donor phenotypic variability, which presents challenges for the development of regenerative therapies. Here, we investigated whether the frequency of putative BMSC sub-populations within the freshly isolated mononuclear cell fraction of bone marrow is phenotypically predictive for the in vitro derived stromal cell culture. (2) Vertebral body, iliac crest, and femoral head bone marrow were acquired from 33 patients (10 female and 23 male, age range 14-91). BMSC sub-populations were identified within freshly isolated mononuclear cell fractions based on cell-surface marker profiles. Stromal cells were expanded in monolayer on tissue culture plastic. Phenotypic assessment of in vitro derived cell cultures was performed by examining growth kinetics, chondrogenic, osteogenic, and adipogenic differentiation. (3) Gender, donor age, and anatomical site were neither predictive for the total yield nor the population doubling time of in vitro derived BMSC cultures. The abundance of freshly isolated progenitor sub-populations (CD45-CD34-CD73+, CD45-CD34-CD146+, NG2+CD146+) was not phenotypically predictive of derived stromal cell cultures in terms of growth kinetics nor plasticity. BMSCs derived from iliac crest and vertebral body bone marrow were more responsive to chondrogenic induction, forming superior cartilaginous tissue in vitro, compared to those isolated from femoral head. (4) The identification of discrete progenitor populations in bone marrow by current cell-surface marker profiling is not predictive for subsequently derived in vitro BMSC cultures. Overall, the iliac crest and the vertebral body offer a more reliable tissue source of stromal progenitor cells for cartilage repair strategies compared to femoral head.}, language = {en} } @article{SchmalzlPlumhoffGilbertetal.2019, author = {Schmalzl, J. and Plumhoff, P. and Gilbert, F. and Gohlke, F. and Konrads, C. and Brunner, U. and Jakob, F. and Ebert, R. and Steinert, AF}, title = {The inflamed biceps tendon as a pain generator in the shoulder: A histological and biomolecular analysis}, series = {Journal of Orthopaedic Surgery}, volume = {27}, journal = {Journal of Orthopaedic Surgery}, number = {1}, doi = {10.1177/2309499018820349}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-228611}, pages = {1-10}, year = {2019}, abstract = {Introduction: The long head of the biceps (LHB) is often resected in shoulder surgery. However, its contribution to inflammatory processes in the shoulder remains unclear. In the present study, inflamed and noninflamed human LHBs were comparatively characterized for features of inflammation. Materials and methods: Twenty-two resected LHB tendons were classified into inflamed (n = 11) and noninflamed (n = 11) samples. For histological examination, samples were stained with hematoxylin eosin, Azan, van Gieson, and Masson Goldner trichrome. Neuronal tissue was immunohistochemically visualized. In addition, specific inflammatory marker gene expression of primary LHB-derived cell cultures were analyzed. Results: Features of tendinopathy, such as collagen disorganization, infiltration by inflammatory cells, neovascularization, and extensive neuronal innervation were found in the tendinitis group. Compared to noninflamed samples, inflamed LHBs showed a significantly increased inflammatory marker gene expression Conclusion: Structural and biomolecular differences of both groups suggest that the LHB tendon acts as an important pain generator in the shoulder joint. These findings can, on the one hand, contribute to the understanding of the biomolecular genesis of LHB tendinitis and, on the other hand, provide possibilities for new therapeutic approaches.}, language = {en} } @phdthesis{Nuesslein2023, author = {N{\"u}sslein, Nicolai}, title = {Mobile Inlay versus Fixed Inlay: Ein Vergleich kurz- und mittelfristiger radiologischer Ergebnisse nach Prothesenimplantation im oberen Sprunggelenk}, doi = {10.25972/OPUS-31749}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-317496}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2023}, abstract = {Prothesennahe osteolytische L{\"a}sionen in Form von Lyses{\"a}umen und Zysten sind wegen des Risikos einer aseptischen Lockerung mitunter die h{\"a}ufigsten Gr{\"u}nde f{\"u}r ein Prothesenversagen in der Sprunggelenkendoprothetik. Die Genese dieser osteolytischen L{\"a}sionen ist aktuell noch nicht abschließend gekl{\"a}rt, bei weitestgehender {\"U}bereinstimmung in der Literatur jedoch multifaktoriell. Die Dissertation befasst sich mit dem Vergleich des kurz- bis mittelfristigen radiologischen Outcomes zweier unterschiedlicher Spunggelenkendoprothesen, welche jedoch - bis auf die Befestigungsart des Inlays - nahezu baugleich sind. Dabei wurde {\"u}berpr{\"u}ft, ob die Befestigungsart des Inlays (mobil oder fixiert) einen Einfluss auf die Ausbildung periprothetischer Lyses{\"a}ume und Zysten im Nachbeobachtungszeitraum hat. Es erfolgte zudem ein Vergleich der Survival Rates beider Gruppen. Zu den j{\"a}hrlichen Nachbeobachtungszeitr{\"a}umen wurden die angefertigten R{\"o}ntgenbilder auf die Ausbildung von relevanten prothesennahen Zysten und Lyses{\"a}umen hin untersucht. Zusammenfassend ergab sich zwischen den beiden Gruppen in Hinsicht auf die Entstehung prothesennaher Zysten sowohl bez{\"u}glich der Gesamtzahl sowie des betroffenen Knochens kein signifikanter Unterschied, obwohl Zysten in der Gruppe mit mobilem Inlay insgesamt h{\"a}ufiger auftraten. Auch in Hinsicht auf die Entstehung von Lyses{\"a}umen gab es bez{\"u}glich der Gesamtzahl keinen signifikanten Unterschied. In der Gruppe mit fixiertem Inlay kamen allerdings prothesennahe Lyses{\"a}ume in der Tibia signifikant h{\"a}ufiger vor als in der Gruppe mit mobilem Inlay. In Hinsicht auf die Survival Rates zeigte sich ebenfalls kein signifikanter Unterschied. Weitere prospektive, randomisierte Studien mit gr{\"o}ßeren Patientenkollektiven und l{\"a}ngerem Followup werden n{\"o}tig sein, um im Verlauf einen zu erwartenden signifikanten Unterschied zwischen beiden Prothesengruppen bez{\"u}glich der Entstehung prothesennaher osteolytischer L{\"a}sionen und ein konsekutives Prothesenversagen feststellen zu k{\"o}nnen.}, subject = {Prothetik}, language = {de} } @article{BorojevićJaukovićKukoljetal.2022, author = {Borojević, Ana and Jauković, Aleksandra and Kukolj, Tamara and Mojsilović, Slavko and Obradović, Hristina and Trivanović, Drenka and Živanović, Milena and Zečević, Željko and Simić, Marija and Gobeljić, Borko and Vujić, Dragana and Bugarski, Diana}, title = {Vitamin D3 stimulates proliferation capacity, expression of pluripotency markers, and osteogenesis of human bone marrow mesenchymal stromal/stem cells, partly through SIRT1 signaling}, series = {Biomolecules}, volume = {12}, journal = {Biomolecules}, number = {2}, issn = {2218-273X}, doi = {10.3390/biom12020323}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-262203}, year = {2022}, abstract = {The biology of vitamin D3 is well defined, as are the effects of its active metabolites on various cells, including mesenchymal stromal/stem cells (MSCs). However, the biological potential of its precursor, cholecalciferol (VD3), has not been sufficiently investigated, although its significance in regenerative medicine — mainly in combination with various biomaterial matrices — has been recognized. Given that VD3 preconditioning might also contribute to the improvement of cellular regenerative potential, the aim of this study was to investigate its effects on bone marrow (BM) MSC functions and the signaling pathways involved. For that purpose, the influence of VD3 on BM-MSCs obtained from young human donors was determined via MTT test, flow cytometric analysis, immunocytochemistry, and qRT-PCR. Our results revealed that VD3, following a 5-day treatment, stimulated proliferation, expression of pluripotency markers (NANOG, SOX2, and Oct4), and osteogenic differentiation potential in BM-MSCs, while it reduced their senescence. Moreover, increased sirtuin 1 (SIRT1) expression was detected upon treatment with VD3, which mediated VD3-promoted osteogenesis and, partially, the stemness features through NANOG and SOX2 upregulation. In contrast, the effects of VD3 on proliferation, Oct4 expression, and senescence were SIRT1-independent. Altogether, these data indicate that VD3 has strong potential to modulate BM-MSCs' features, partially through SIRT1 signaling, although the precise mechanisms merit further investigation.}, language = {en} } @phdthesis{Leucht2023, author = {Leucht, Maximilian}, title = {Charakterisierung der zellul{\"a}ren Signatur und Zusammensetzung von Knochenmarks-MSC aus osteoarthrotischen H{\"u}ften}, doi = {10.25972/OPUS-30543}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-305434}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2023}, abstract = {Die Coxarthrose ist eine h{\"a}ufige degenerative Erkrankung, deren Pr{\"a}valenz mit steigendem Lebensalter zunimmt. Durch die steigende Lebenserwartung der Bev{\"o}lkerung nimmt dementsprechend auch die Anzahl an Patienten mit Coxarthrose zu. Die Therapie besteht konservativ u.a. aus Physiotherapie und Analgesie. Reichen die konservativen Maßnahmen nicht aus, steht der totale Gelenkersatz in Form eine Totalendoprothese zur Verf{\"u}gung. Bisher gibt es keine regenerativen Therapien, die den arthrotisch degenerierten Gelenkknorpel ersetzen k{\"o}nnen. Durch die F{\"a}higkeit, sich in Knochen-, Fett- und Knorpelzellen zu differenzieren, ist in der Vergangenheit die mesenchymale Stammzelle in den Fokus der Forschung ger{\"u}ckt. Es wird vermutet, dass diese Stammzellpopulation das Potential besitzen k{\"o}nnte, den defekten Knorpel zu ersetzen. Diese Zellpopulation ist in vivo jedoch noch nicht ausreichend charakterisiert und es fehlen belastbare Daten, wie sich die (pathologische) Umgebung auf die MSC auswirkt. In den letzten Jahren sind diverse Populationen von MSC mit unterschiedlichen Eigenschaften entdeckt worden. Um die subchondralen Populationen aus arthrotischen H{\"u}ften genauer zu charakterisieren, wurde hier Reaming aus dem Acetabulum (ein bei der H{\"u}ft-TEP Implantation anfallendes chirurgisches Abfallprodukt) untersucht. Die enthaltenen Zellen wurden im Hinblick auf die zellul{\"a}re Signatur und donorenbezogenen Eigenschaften untersucht. Parameter, die untersucht wurden, waren das Alter, das Geschlecht, der BMI und der K\&L Score. Außerdem wurde die zellul{\"a}re Signatur anhand bestimmter Oberfl{\"a}chenmarker untersucht. Weiterhin wurden die isolierten und kultivierten MSC untersucht, ob sie sich bzgl. ihrer F{\"a}higkeit unterscheiden, sich in die adipogene bzw. osteogene Linie zu differenzieren. Eine Eigenschaft, die bisher bei allen Populationen von m{\"o}glichen MNC bzw. MSC nachgewiesen wurde, ist ihre F{\"a}higkeit Kolonien zu bilden - sog. CFU-F. Bei den durchgef{\"u}hrten Untersuchungen zeigte sich, dass aus allen erhaltenen Proben MSC in Form von CFU-F gewonnen werden konnten. Weiterhin waren alle Zellen in der Lage adipogen bzw. osteogen zu differenzieren. Signifikante Unterschiede in Bezug auf die Differenzierungseigenschaften konnten nicht festgestellt werden. Eine h{\"o}here CFU-F Bildung konnte aus dem Reaming von m{\"a}nnlichen Donoren nachgewiesen werden. Weiterhin konnte gezeigt werden, dass sich eine signifikant h{\"o}here Anzahl CD271-exprimierender Zellen im Reaming von m{\"a}nnlichen Donoren befand. Ebenfalls konnte eine signifikante Zunahme f{\"u}r CD45- CD13+ CD105+ Zellen mit steigendem BMI nachgewiesen werden. Durch diese umfassende Versuchsreihe konnte dargelegt werden, dass es in arthrotischen H{\"u}ften Unterschiede in der MSC Zahl im Vergleich der Geschlechter gibt und dass bestimmte Populationen von MSC mit steigendem BMI zunehmen. Um diese Ergebnisse einordnen zu k{\"o}nnen ist es in Zukunft notwendig zu untersuchen, ob diese Unterschiede allein durch die Arthrose bedingt sind oder ob dieser Unterschied auch im gesunden Knochenmark vorliegt.}, subject = {Mesenchymale Stromazelle}, language = {de} } @article{NedopilDhaliwalHowelletal.2022, author = {Nedopil, Alexander J. and Dhaliwal, Anand and Howell, Stephen M. and Hull, Maury L.}, title = {A surgeon that switched to unrestricted kinematic alignment with manual instruments has a short learning curve and comparable resection accuracy and outcomes to those of an experienced surgeon}, series = {Journal of Personalized Medicine}, volume = {12}, journal = {Journal of Personalized Medicine}, number = {7}, issn = {2075-4426}, doi = {10.3390/jpm12071152}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-281842}, year = {2022}, abstract = {After starting an orthopedic practice, a surgeon with a fellowship in mechanically aligned (MA) TKA initiated this study to characterize their learning curve after they switched to unrestricted kinematic alignment (KA) TKA using manual instruments. Accordingly, the present study determined for the inexperienced (IE) surgeon the number of cases required to achieve consistent femoral resections and operating times, and whether the femoral resection accuracy, patient-reported outcome measures (PROMs), and component alignment were different from an experienced (E) surgeon. This prospective cohort study analyzed the IE surgeon's first 30 TKAs, all performed with KA, and 30 consecutive KA TKAs performed by an E surgeon. The resection accuracy or deviation was the calipered thickness of the distal and posterior medial and lateral femoral resections minus the planned resection thickness, which was the thickness of the corresponding condyle of the femoral component, minus 2 mm for cartilage wear, and 1 mm for the kerf of the blade. Independent observers recorded the femoral resection thickness, operative times, PROMs, and alignment. For each femoral resection, the deviation between three groups of patients containing ten consecutive KA TKAs, was either insignificant (p = 0.695 to 1.000) or within the 0.5 mm resolution of the caliper, which indicated no learning curve. More than three groups were needed to determine the learning curve for the operative time; however, the IE surgeon's procedure dropped to 77 min for the last 10 patients, which was 20 min longer than the E surgeon. The resection deviations of the IE and E surgeon were comparable, except for the posterolateral femoral resection, which the IE surgeon under-resected by a mean of -0.8 mm (p < 0.0001). At a mean follow-up of 9 and 17 months, the Forgotten Joint Score, Oxford Knee Score, KOOS, and the alignment of the components and limbs were not different between the IE and E surgeon (p ≥ 0.6994). A surgeon that switches to unrestricted KA with manual instruments can determine their learning curve by computing the deviation of the distal and posterior femoral resections from the planned resection. Based on the present study, an IE surgeon could have resection accuracy, post-operative patient outcomes, and component alignment comparable to an E surgeon.}, language = {en} } @article{Trivanović2022, author = {Trivanović, Drenka}, title = {Adult stem cells in aging}, series = {Journal of Personalized Medicine}, volume = {12}, journal = {Journal of Personalized Medicine}, number = {5}, issn = {2075-4426}, doi = {10.3390/jpm12050795}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-275226}, year = {2022}, abstract = {No abstract available}, language = {en} } @article{KaltdorfBreitenbachKarletal.2023, author = {Kaltdorf, Martin and Breitenbach, Tim and Karl, Stefan and Fuchs, Maximilian and Kessie, David Komla and Psota, Eric and Prelog, Martina and Sarukhanyan, Edita and Ebert, Regina and Jakob, Franz and Dandekar, Gudrun and Naseem, Muhammad and Liang, Chunguang and Dandekar, Thomas}, title = {Software JimenaE allows efficient dynamic simulations of Boolean networks, centrality and system state analysis}, series = {Scientific Reports}, volume = {13}, journal = {Scientific Reports}, doi = {10.1038/s41598-022-27098-7}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-313303}, year = {2023}, abstract = {The signal modelling framework JimenaE simulates dynamically Boolean networks. In contrast to SQUAD, there is systematic and not just heuristic calculation of all system states. These specific features are not present in CellNetAnalyzer and BoolNet. JimenaE is an expert extension of Jimena, with new optimized code, network conversion into different formats, rapid convergence both for system state calculation as well as for all three network centralities. It allows higher accuracy in determining network states and allows to dissect networks and identification of network control type and amount for each protein with high accuracy. Biological examples demonstrate this: (i) High plasticity of mesenchymal stromal cells for differentiation into chondrocytes, osteoblasts and adipocytes and differentiation-specific network control focusses on wnt-, TGF-beta and PPAR-gamma signaling. JimenaE allows to study individual proteins, removal or adding interactions (or autocrine loops) and accurately quantifies effects as well as number of system states. (ii) Dynamical modelling of cell-cell interactions of plant Arapidopsis thaliana against Pseudomonas syringae DC3000: We analyze for the first time the pathogen perspective and its interaction with the host. We next provide a detailed analysis on how plant hormonal regulation stimulates specific proteins and who and which protein has which type and amount of network control including a detailed heatmap of the A.thaliana response distinguishing between two states of the immune response. (iii) In an immune response network of dendritic cells confronted with Aspergillus fumigatus, JimenaE calculates now accurately the specific values for centralities and protein-specific network control including chemokine and pattern recognition receptors.}, language = {en} } @article{Rudert2022, author = {Rudert, Maximilian}, title = {Taking the next step in personalised orthopaedic implantation}, series = {Journal of Personalized Medicine}, volume = {12}, journal = {Journal of Personalized Medicine}, number = {3}, issn = {2075-4426}, doi = {10.3390/jpm12030365}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-262089}, year = {2022}, abstract = {No abstract available}, language = {en} } @article{WagenbrennerPokerHeinzetal.2022, author = {Wagenbrenner, Mike and Poker, Konrad and Heinz, Tizian and Herrmann, Marietta and Horas, Konstantin and Ebert, Regina and Mayer-Wagner, Susanne and Holzapfel, Boris M. and Rudert, Maximilian and Steinert, Andre F. and Weißenberger, Manuel}, title = {Mesenchymal stromal cells (MSCs) isolated from various tissues of the human arthritic knee joint possess similar multipotent differentiation potential}, series = {Applied Sciences}, volume = {12}, journal = {Applied Sciences}, number = {4}, issn = {2076-3417}, doi = {10.3390/app12042239}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-262334}, year = {2022}, abstract = {(1) Background: The mesenchymal stromal cells (MSCs) of different tissue origins are applied in cell-based chondrogenic regeneration. However, there is a lack of comparability determining the most suitable cell source for the tissue engineering (TE) of cartilage. The purpose of this study was to compare the in vitro chondrogenic potential of MSC-like cells from different tissue sources (bone marrow, meniscus, anterior cruciate ligament, synovial membrane, and the infrapatellar fat pad removed during total knee arthroplasty (TKA)) and define which cell source is best suited for cartilage regeneration. (2) Methods: MSC-like cells were isolated from five donors and expanded using adherent monolayer cultures. Differentiation was induced by culture media containing specific growth factors. Transforming growth factor (TGF)-ß1 was used as the growth factor for chondrogenic differentiation. Osteogenesis and adipogenesis were induced in monolayer cultures for 27 days, while pellet cell cultures were used for chondrogenesis for 21 days. Control cultures were maintained under the same conditions. After, the differentiation period samples were analyzed, using histological and immunohistochemical staining, as well as molecularbiological analysis by RT-PCR, to assess the expression of specific marker genes. (3) Results: Plastic-adherent growth and in vitro trilineage differentiation capacity of all isolated cells were proven. Flow cytometry revealed the clear co-expression of surface markers CD44, CD73, CD90, and CD105 on all isolated cells. Adipogenesis was validated through the formation of lipid droplets, while osteogenesis was proven by the formation of calcium deposits within differentiated cell cultures. The formation of proteoglycans was observed during chondrogenesis in pellet cultures, with immunohistochemical staining revealing an increased relative gene expression of collagen type II. RT-PCR proved an elevated expression of specific marker genes after successful differentiation, with no significant differences regarding different cell source of native tissue. (4) Conclusions: Irrespective of the cell source of native tissue, all MSC-like cells showed multipotent differentiation potential in vitro. The multipotent differentiation capacity did not differ significantly, and chondrogenic differentiation was proven in all pellet cultures. Therefore, cell suitability for cell-based cartilage therapies and tissue engineering is given for various tissue origins that are routinely removed during total knee arthroplasty (TKA). This study might provide essential information for the clinical tool of cell harvesting, leading to more flexibility in cell availability.}, language = {en} } @article{ShekharHowellNedopiletal.2022, author = {Shekhar, Adithya and Howell, Stephen M. and Nedopil, Alexander J. and Hull, Maury L.}, title = {Excellent and good results treating stiffness with early and late manipulation after unrestricted caliper-verified kinematically aligned TKA}, series = {Journal of Personalized Medicine}, volume = {12}, journal = {Journal of Personalized Medicine}, number = {2}, issn = {2075-4426}, doi = {10.3390/jpm12020304}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-262094}, year = {2022}, abstract = {Manipulation under anesthesia (MUA) for stiffness within 6 to 12 weeks after mechanically aligned total knee arthroplasty (TKA) generally yields better outcome scores than an MUA performed later. However, the timing of MUA after unrestricted, caliper-verified, kinematically aligned (KA) TKA remains uncertain. A retrospective review identified 82 of 3558 (2.3\%) KA TKA patients treated with an MUA between 2010 and 2017. Thirty patients treated with an MUA within 3 months of the TKA (i.e., early) and 24 in the late group (i.e., >3 months) returned a questionnaire after a mean of 6 years and 5 years, respectively. Mean outcome scores for the early vs. late group were 78 vs. 62 for the Forgotten Joint Score (FJS) (p = 0.023) and 42 vs. 39 for the Oxford Knee Score (OKS) (p = 0.037). Subjectively, the early vs. late group responses indicated that 83\% vs. 67\% walked without a limp, 73\% vs. 54\% had normal extension, and 43\% vs. 25\% had normal flexion. An MUA within 3 months after unrestricted KA TKA provided excellent FJS and OKS at final follow-up relative to a late MUA. A late MUA performed after 3 months is worth consideration because of the good FJS and OKS scores, albeit with a risk of a persistent limp and limitation in knee extension and flexion.}, language = {en} } @article{WeissenbergerWagenbrennerSchoteetal.2022, author = {Weißenberger, Manuel and Wagenbrenner, Mike and Schote, Fritz and Horas, Konstantin and Sch{\"a}fer, Thomas and Rudert, Maximilian and Barthel, Thomas and Heinz, Tizian and Reppenhagen, Stephan}, title = {The 3-triangle method preserves the posterior tibial slope during high tibial valgus osteotomy: first preliminary data using a mathematical model}, series = {Journal of Experimental Orthopaedics}, volume = {9}, journal = {Journal of Experimental Orthopaedics}, issn = {2197-1153}, doi = {10.1186/s40634-022-00466-y}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-300806}, year = {2022}, abstract = {Purpose Despite much improved preoperative planning techniques accurate intraoperative assessment of the high tibial valgus osteotomy (HTO) remains challenging and often results in coronal over- and under-corrections as well as unintended changes of the posterior tibial slope. Noyes et al. reported a novel method for accurate intraoperative coronal and sagittal alignment correction based on a three-dimensional mathematical model. This is the first study examining preliminary data via the proposed Noyes approach for accurate intraoperative coronal and sagittal alignment correction during HTO. Methods From 2016 to 2020 a total of 24 patients (27 knees) underwent HTO applying the proposed Noyes method (Noyes-Group). Radiographic data was analyzed retrospectively and matched to patients that underwent HTO using the conventional method, i.e., gradual medial opening using a bone spreader under fluoroscopic control (Conventional-Group). All operative procedures were performed by an experienced surgeon at a single orthopaedic university center. Results From the preoperative to the postoperative visit no statistically significant changes of the posterior tibial slope were noted in the Noyes-Group compared to a significant increase in the Conventional-Group (p = 0.01). Regarding the axial alignment no significant differences between both groups were observed pre- and postoperatively. The number of over- and under-corrections did not differ significantly between both groups. Linear regression analysis showed a significant correlation of the postoperative medial proximal tibial angle (MPTA) with the position of the weightbearing line on the tibial plateau. Conclusion The 3-triangle method by Noyes seems to be a promising approach for preservation of the posterior tibial slope during HTO.}, language = {en} } @phdthesis{Cetindere2023, author = {Cetindere, Rojan}, title = {Klinische und radiologische Ergebnisse nach offener Schultergelenksstabilisierung mittels Beckenkammspan}, doi = {10.25972/OPUS-31314}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-313148}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2023}, abstract = {Im Rh{\"o}n-Klinikum wurden von 2012 bis 2015 49 Patient*innen wegen eines Glenoiddefektes mittels offenem Beckenkammspantransfer mit Kapselshift bei anteriorer Schulterinstabilit{\"a}t behandelt. 27 Patienten konnten in dieser Studie eingeschlossen werden (Einschlusskriterien: Follow-up von mindestens 12 Monaten, kompletter pr{\"a}operativer 3D-CT-Datensatz / Ausschlusskriterien: traumatische Schulterluxation oder Voroperation der kontralateralen Schulter). Ziel der Studie war es, das kurz- bis mittelfristige klinische Outcome dieser Kohorte zu erfassen, der Vergleich mit Ergebnissen anderer Arbeitsgruppen und der Vergleich von pr{\"a}operativ verwendeten Messmethoden (Chuang- bzw. Wambacher-Methode) f{\"u}r den Glenoiddefekt. Bei einem mittleren Follow-up von 27,11 Monaten zeigten sich {\"u}berwiegend gute bis exzellente kurz- bis mittelfristige OP-Ergebnisse (Rowe-Score: 84,81, Oxford-Shoulder-Score: 20,56, WOSI-Score: 371, Constant-Score: 86,74). Die OP-Methode eignet sich gut f{\"u}r Patient*innen, die mehrfach voroperiert sind, multiple Luxationsereignisse hatten sowie f{\"u}r diejenigen mit relevanter Hyperlaxizit{\"a}t, bei denen eine Latarjet-Operation kontraindiziert ist. Die OP-Methode ist gut anwendbar bei Patient*innen mit subkritischem Glenoidverlust < 20 \%, wenn zus{\"a}tzliche Sekund{\"a}rfaktoren vorliegen. Eine postoperative Omarthrose ist ein Risikofaktor f{\"u}r ein signifikant schlechteres Outcome. Die Gesamtkomplikationsrate lag bei 25,9\%, der Großteil hiervon (18,3\%) waren innerhalb kurzer Zeit reversibel. Die Reluxationsrate lag bei 3,7\%. Bei allen Studienteilnehmenden kam es zum Span-Remodelling ohne Schraubenlockerung oder Spanbruch. Eine {\"u}berm{\"a}ßige Spanresorbtion erfolgt antero-inferior, w{\"a}hrend um die Osteosyntheseschrauben eine {\"U}berkontur persistiert. Die Glenoiddefekte lagen bei 23,39 \% (Chuang) bzw. 22,06 \% (Wambacher). Es zeigte sich eine gute {\"U}bereinstimmung der Messergebnisse beider Methoden, allerdings lagen die Werte nach Chuang signifikant h{\"o}her.}, subject = {Orthop{\"a}die}, language = {de} } @article{PrasseStratosNiehoffetal.2022, author = {Prasse, Tobias and Stratos, Ioannis and Niehoff, Anja and Christ, Hildegard and Heck, Vincent and Meyer, Carolin and Mittlmeier, Thomas}, title = {Bisphenol A-related effects on bone morphology and biomechanical properties in an animal model}, series = {Toxics}, volume = {10}, journal = {Toxics}, number = {2}, issn = {2305-6304}, doi = {10.3390/toxics10020086}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-262216}, year = {2022}, abstract = {Bisphenol A (BPA), which is contained in numerous plastic products, is known to act as an endocrine-disruptive, toxic, and carcinogenic chemical. This experimental series sought to determine the influence of BPA exposure on the femoral bone architecture and biomechanical properties of male and female Wistar rats. BPA was applied subcutaneously by using osmotic pumps. After 12 weeks, the bones were analyzed by micro-computed tomography (micro-CT) and a three-point bending test. Comparing the female low- and high-dose groups, a significantly greater marrow area (p = 0.047) was identified in the group exposed to a higher BPA concentration. In addition, the trabecular number tended to be higher in the female high-dose group when compared to the low-dose group (p > 0.05). The area moment of inertia also tended to be higher in the male high-dose group when compared to the male low-dose group (p > 0.05). Considering our results, BPA-related effects on the bone morphology in female Wistar rats are osteoanabolic after high-dose exposure, while, in male rats, a tendency toward negative effects on the bone morphology in terms of a reduced cross-sectional cortical area and total area could be demonstrated.}, language = {en} } @article{StreckForstervonHertzbergBoelchetal.2022, author = {Streck, Laura Elisa and Forster, Johannes and von Hertzberg-Boelch, Sebastian Philipp and Reichel, Thomas and Rudert, Maximilian and Rueckl, Kilian}, title = {The role of synovial fluid aspiration in shoulder joint infections}, series = {BMC Musculoskeletal Disorders}, volume = {23}, journal = {BMC Musculoskeletal Disorders}, doi = {10.1186/s12891-022-05285-x}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-300795}, year = {2022}, abstract = {Background Joint aspiration with analysis of synovial fluid white blood cell count (WBC) and microbiological culture is a widely established aspect in the diagnosis of shoulder joint infections (SJI). In case of a two stage revision for SJI, joint aspiration before re-/implantation of a total shoulder arthroplasty (TSA) was used to rule out persistent infection for years but its value is under debate. Shoulder specific data on all aspects is rare. The current study aims to answer the following research questions: Does joint aspiration have an insufficient predictive value in the diagnosis of SJI in (1) initial workup and (2) before definite arthroplasty with polymethylmethacrylate (PMMA)-Spacer in place? Methods This retrospective evaluation investigates 35 patients that were treated for SJI with a two staged implantation of a TSA after debridement and implantation of an PMMA-Spacer. Joint aspirations were performed preoperatively (PA) and before re-/implantation of the prosthesis while spacer was in place (interstage aspiration, IA). Samples were taken for microbiological culture and analysis of WBC. Sensitivity and specificity were calculated with reference to intraoperative microbiological samples. Receiver Operating Characteristic (ROC), Area-Under-Curve analysis (AUC) and calculation of the Youden index were performed to find optimum cut-off for WBC. Results The sensitivity of microbiological cultures from PA was 58.3\% and the specificity was 88.9\%. The mean WBC was 27,800 leucocytes/mm3 (range 400-96,300). The maximum Youden index (0.857) was a cut-off of 2600 leucocytes/mm3 with a sensitivity of 85.7\% and a specificity of 100.0\%. The sensitivity and specificity of IA were 0.0\% and 88.5\%, respectively. Conclusions Preoperative aspiration is likely to miss Cutibacteria spp. and CoNS and cannot rule out infection for sure. However, we recommend it for its advantages of targeted antibiotic therapy in case of germ identification. Empiric antibiotic therapy should cover Cutibacteria and CoNS even if aspiration showed negative microbiological cultures. In contrast, the diagnostic value of interstage aspiration does not qualify for its routine use.}, language = {en} } @article{SteinertSchroederSefrinetal.2022, author = {Steinert, Andre F. and Schr{\"o}der, Lennart and Sefrin, Lukas and Janßen, Bj{\"o}rn and Arnholdt, J{\"o}rg and Rudert, Maximilian}, title = {The impact of total knee replacement with a customized cruciate-retaining implant design on patient-reported and functional outcomes}, series = {Journal of Personalized Medicine}, volume = {12}, journal = {Journal of Personalized Medicine}, number = {2}, issn = {2075-4426}, doi = {10.3390/jpm12020194}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-312746}, year = {2022}, abstract = {Purpose: To treat patients with tricompartimental knee osteoarthritis (OA), a customized cruciate-retaining total knee arthroplasty (CCR-TKA) system can be used, including both individualized instrumentation and implants. The objective of this monocentric cohort study was to analyze patient-reported and functional outcomes in a series of patients implanted with the second generation of this customized implant. Methods: At our arthroplasty center, we prospectively recruited a cohort of patients with tricompartmental gonarthrosis to be treated with total knee replacement (TKA) using a customized cruciate-retaining (CCR) implant design. Inclusion criteria for patients comprised the presence of intact posterior cruciate and collateral ligaments and a knee deformity that was restricted to <15° varus, valgus, or flexion contracture. Patients were assessed for their range of motion (ROM), Knee Society Score (KSS), Western Ontario and McMaster University osteoarthritis index (WOMAC), and short form (SF)-12 physical and mental scores, preoperatively, at 3 and 6 months, as well as at 1, 2, 3, and 5 years of follow-up (FU) postoperatively. Results: The average age of the patient population was 64 years (range: 40-81), the average BMI was 31 (range: 23-42), and in total, 28 female and 45 male patients were included. Implant survivorship was 97.5\% (one septic loosening) at an average follow-up of 2.5 years. The KSS knee and function scores improved significantly (p < 0.001) from, respectively, 41 and 53 at the pre-operative visit, to 92 and 86, respectively, at the 5-year post-operative time point. The SF-12 Physical and Mental scores significantly (p < 0.001) improved from the pre-operative values of 28 and 50, to 50 and 53 at the 5-year FU, respectively. Patients experienced significant improvements in their overall knee range of motion, from 106° at the preoperative visit to 122°, on average, 5 years postoperatively. The total WOMAC score significantly (p < 0.001) improved from 49.1 preoperatively to 11.4 postoperatively at 5-year FU. Conclusions: Although there was no comparison to other implants within this study, patients reported high overall satisfaction and improvement in functional outcomes within the first year from surgery, which continued over the following years. These mid-term results are excellent compared with those reported in the current literature. Comparative long-term studies with this device are needed. Level of evidence 3b (individual case-control study).}, language = {en} } @article{EidmannEisertRudertetal.2022, author = {Eidmann, Annette and Eisert, Marius and Rudert, Maximilian and Stratos, Ioannis}, title = {Influence of Vitamin D and C on bone marrow edema syndrome — A scoping review of the literature}, series = {Journal of Clinical Medicine}, volume = {11}, journal = {Journal of Clinical Medicine}, number = {22}, issn = {2077-0383}, doi = {10.3390/jcm11226820}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-297356}, year = {2022}, abstract = {Bone marrow edema syndrome (BMES) is a rare disease with a largely unknown etiology. The aim of this scoping review is to systematically evaluate and combine the available evidence about vitamin D and C and BMES. The analysis of the manuscripts was based on country of origin, number of patients, gender, study type, epidemiology, localization, bone mineral density measurements, vitamin status and therapy. Sixty studies were included. The overall number of patients was 823 with a male-to-female ratio of 1.55:1 and a mean age of 40.9 years. Studies were very heterogeneous and of diverging scientific scope with a weak level of evidence. The hip was the most affected joint, followed by the foot and ankle and the knee; 18.3\% of patients suffered from multifocal BMES. Sixteen studies reported on vitamin D levels, resulting in a high prevalence of vitamin D deficiency (47\%) and insufficiency (17.9\%) among BMES patients. Three BME manuscripts were associated with vitamin C deficiency. Current therapeutic interventions include conservative measures (mainly unloading), various osteoactive drugs and iloprost. In summary, data about BMES in association with vitamin status is limited. A causal relationship between vitamin D or vitamin C status, osteopenia, and BMES cannot be determined from the existing literature.}, language = {en} } @article{vonHertzbergBoelchLuedemannRudertetal.2022, author = {von Hertzberg-Boelch, Sebastian Philipp and Luedemann, Martin and Rudert, Maximilian and Steinert, Andre F.}, title = {PMMA bone cement: antibiotic elution and mechanical properties in the context of clinical use}, series = {Biomedicines}, volume = {10}, journal = {Biomedicines}, number = {8}, issn = {2227-9059}, doi = {10.3390/biomedicines10081830}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-281708}, year = {2022}, abstract = {This literature review discusses the use of antibiotic loaded polymethylmethacrylate bone cements in arthroplasty. The clinically relevant differences that have to be considered when antibiotic loaded bone cements (ALBC) are used either for long-term implant fixation or as spacers for the treatment of periprosthetic joint infections are outlined. In this context, in vitro findings for antibiotic elution and material properties are summarized and transferred to clinical use.}, language = {en} } @article{KippnichDuempertSchorscheretal.2022, author = {Kippnich, Maximilian and Duempert, Maximilian and Schorscher, Nora and Jordan, Martin C. and Kunz, Andreas S. and Meybohm, Patrick and Wurmb, Thomas}, title = {Simultaneous treatment of trauma patients in a dual room trauma suite with integrated movable sliding gantry CT system: an observational study}, series = {Scientific Reports}, volume = {12}, journal = {Scientific Reports}, number = {1}, doi = {10.1038/s41598-022-20491-2}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-299695}, year = {2022}, abstract = {The trauma center of the University Hospital Wuerzburg has developed an advanced trauma pathway based on a dual-room trauma suite with an integrated movable sliding gantry CT-system. This enables simultaneous CT-diagnostics and treatment of two trauma patients. The focus of this study was to investigate the quality of the concept based on defined outcome criteria in this specific setting (time from arrival to initiation of CT scan: tCT; time from arrival to initiation of emergency surgery: tES). We analyzed all trauma patients admitted to the hospital's trauma suite from 1st May 2019 through 29th April 2020. Two subgroups were defined: trauma patients, who were treated without a second trauma patient present (group 1) and patients, who were treated simultaneously with another trauma patient (group 2). Simultaneous treatment was defined as parallel arrival within a period of 20 min. Of 423 included trauma patients, 46 patients (10.9\%) were treated simultaneously. Car accidents were the predominant trauma mechanism in this group (19.6\% vs. 47.8\%, p < 0.05). Prehospital life-saving procedures were performed with comparable frequency in both groups (intubation 43.5\% vs. 39\%, p = 0.572); pleural drainage 3.2\% vs. 2.2\%, p = 0.708; cardiopulmonary resuscitation 5\% vs. 2.2\%, p = 0.387). At hospital admission, patients in group 2 suffered significantly more pain (E-problem according to Advanced Trauma Life Support principles©; 29.2\% vs. 45.7\%, p < 0.05). There were no significant differences in the clinical treatment (emergency procedures, vasopressor and coagulant therapy, and transfusion of red blood cells). tCT was 6 (4-10) minutes (median and IQR) in group 1 and 8 (5-15.5) minutes in group 2 (p = 0.280). tES was 90 (78-106) minutes in group 1 and 99 (97-108) minutes in group 2 (p = 0.081). The simultaneous treatment of two trauma patients in a dual-room trauma suite with an integrated movable sliding gantry CT-system requires a medical, organizational, and technical concept adapted to this special setting. Despite the oftentimes serious and life-threatening injuries, optimal diagnostic and therapeutic procedures can be guaranteed for two simultaneous trauma patients at an individual medical level in consistent quality.}, language = {en} } @article{HeinzMellerLuetkensetal.2022, author = {Heinz, Tizian and Meller, Felix and Luetkens, Karsten Sebastian and Horas, Konstantin and Sch{\"a}fer, Thomas and Rudert, Maximilian and Reppenhagen, Stephan and Weißenberger, Manuel}, title = {Can the MRI based AMADEUS score accurately assess pre-surgery chondral defect severity according to the ICRS arthroscopic classification system?}, series = {Journal of Experimental Orthopaedics}, volume = {9}, journal = {Journal of Experimental Orthopaedics}, number = {1}, issn = {2197-1153}, doi = {10.1186/s40634-022-00511-w}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-300781}, year = {2022}, abstract = {Purpose The AMADEUS (Area Measurement And DEpth and Underlying Structures) scoring and grading system has been proposed for the MRI based evaluation of untreated focal chondral defects around the knee. The clinical practicability, its correlation with arthroscopically assessed grading systems (ICRS - International Cartilage Repair Society) and thereby its clinical value in terms of decision making and guiding prognosis was yet to determine. Methods From 2008 to 2019 a total of 89 individuals were indicated for high tibial valgus osteotomy (HTO) due to tibial varus deformity and concomitant chondral defects of the medial compartment of the knee. All patients received a preoperative MRI (1.5 Tesla or 3.0 Tesla) and pre-osteotomy diagnostic arthroscopy. Chondral defects of the medial compartment were scored and graded with the MRI based AMADEUS by three independent raters and compared to arthroscopic defect grading by the ICRS system. Interrater and intrarater reliability as well as correlation analysis with the ICRS classification system were assessed. Results Intraclass correlation coefficients for the various subscores of the AMADEUS showed an overall good to excellent interrater agreement (min: 0.26, max: 0.80). Intrarater agreement turned out to be substantially inferior (min: 0.08, max: 0.53). Spearman correlation revealed an overall moderate correlative association of the AMADEUS subscores with the ICRS classification system, apart from the defect area subscore. Sensitivity of the AMADEUS to accurately identify defect severity according to the ICRS was 0.7 (0.69 for 3.0 Tesla MRI, 0.67 for 1.5 Tesla MRI). The mean AMADEUS grade was 2.60 ± 0.81 and the mean ICRS score 2.90 ± 0.63. Conclusions Overall, the AMADEUS with all its subscores shows moderate correlation with the arthroscopic chondral grading system according to ICRS. This suggests that chondral defect grading by means of the MRI based AMADEUS is well capable of influencing and guiding treatment decisions. Interrater reliability shows overall good agreement.}, language = {en} } @misc{Seefried2023, author = {Seefried, Lothar}, title = {Supplement: Impaired Physical Performance in X-linked Hypophosphatemia is not caused by depleted muscular phosphate stores}, series = {Journal of Clinical Endocrinology \& Metabolism}, journal = {Journal of Clinical Endocrinology \& Metabolism}, doi = {10.25972/OPUS-30364}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-303647}, year = {2023}, abstract = {Supplemental Data to "Impaired Physical Performance in X-linked Hypophosphatemia is not caused by depleted muscular phosphate stores"}, language = {en} } @article{AchenbachHuppertzZemanetal.2022, author = {Achenbach, Leonard and Huppertz, Gunnar and Zeman, Florian and Weber, Johannes and Luig, Patrick and Rudert, Maximilian and Krutsch, Werner}, title = {Multicomponent stretching and rubber band strengthening exercises do not reduce overuse shoulder injuries: a cluster randomised controlled trial with 579 handball athletes}, series = {BMJ Open Sport \& Exercise Medicine}, volume = {8}, journal = {BMJ Open Sport \& Exercise Medicine}, number = {1}, issn = {2055-7647}, doi = {10.1136/bmjsem-2021-001270}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-300770}, year = {2022}, abstract = {Objectives Handball is associated with a high risk of overuse shoulder injury. This study investigated if an injury prevention programme effectively reduces overuse injury to the throwing shoulder of handball athletes. Methods 61 men's and women's handball teams (u-19 and senior athletes) were cluster-randomised into an intervention and a control group in the 2019-2020 season. Players of the intervention group regularly carried out an injury prevention programme. Both groups documented overuse shoulder injuries via an online questionnaire every second week. The primary endpoint was the prevalence of overuse injury to the throwing shoulder. Secondary endpoints were the influence of compliance on the primary endpoint and intensity of overuse shoulder symptoms measured by a shortened, handball-specific Western Ontario Shoulder Index (WOSI). Results 31 teams (295 players) in the intervention group and 30 teams (284 players) in the control group were included for analyses. The overall questionnaire response rate was 61\%. The average prevalence of overuse shoulder injury did not significantly differ between the intervention group (n=109, 38.4\% (95\% CI 32.9\% to 44.2\%)) and the control group (n=106, 35.9\% (95\% CI 30.7\% to 41.6\%), p=0.542). Compliance with the intervention programme did not significantly affect overuse shoulder injury (p=0.893). Using generalised estimating equations for WOSI, the estimated mean for the intervention group was 44.6 points (95\% CI 42.0 to 47.1) and 47.6 points for the control group (95\% CI 44.9 to 50.3, p=0.111). Conclusions A multicomponent exercise programme using rubber bands and stretching did not significantly reduce the prevalence or symptoms of overuse throwing shoulder injury in handball athletes of both sexes. Randomised controlled study; level of evidence I.}, language = {en} } @phdthesis{Poker2023, author = {Poker, Konrad Felix}, title = {Vergleichende in vitro-Charakterisierung des Differenzierungspotentials humaner mesenchymaler Stromazellen aus verschiedenen Geweben des Kniegelenkes von Patientinnen mit Gonarthrose}, doi = {10.25972/OPUS-30293}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-302930}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2023}, abstract = {Humane mesenchymale Stromazellen (hMSCs) sind Interessengebiet der Forschung im Bereich des Tissue Engineering und werden h{\"a}ufig in Bezug auf Knorpelregeneration untersucht. Hierbei sind bereits mehrere potentielle Quellen nachgewiesen worden. Fokus dieser Disseration war die Vergleichende in vitro-Charakterisierung des Differenzierungspotentials von hMSCs von sechs verschiedenen Geweben des Kniegelenkes bei Patientinnen mit Gonarthrose um zu erforschen, welches Gewebe das meiste Potential f{\"u}r eine m{\"o}gliche Extraktion von hMSCs birgt. Hierf{\"u}r wurden Zellen aus der Spongiose, dem Knorpelgewebe, des vorderen Kreuzbandes, der Menisken, der Synovialmebran sowie des Hoffa'schen Fettk{\"o}rpers von f{\"u}nf verschiedenen Spenderinnen isoliert und apidogen, osteogen sowie chondrogen differenziert sowie anschließend histologisch, immunhistochemisch und molekularbiologisch untersucht und die Ergebnisse miteinander verglichen. Hierbei wurde die zun{\"a}chst der Nachweis erbracht, dass es sich bei allen Zellen um hMSCs handelt sowie anschließend gezeigt, dass alle Zellen ein multipotentes Differenzierungspotential aufweisen. W{\"a}hrend kein statistisch relevanter Nachweis erbracht werden konnte, dass eine Zellquelle hierbei {\"u}berlegen ist, scheinen die Zellen der Spongiosa sowie der Synovialmembran das vielversprechendste Potential zu bieten und eigenen sich somit als Quelle f{\"u}r weitere Forschung.}, subject = {Tissue Engineering}, language = {de} } @phdthesis{Szewczykowski2023, author = {Szewczykowski, Viktoria}, title = {Definitionen und Diagnostika der periprothetischen Infektion}, doi = {10.25972/OPUS-29932}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-299327}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2023}, abstract = {Die periprothetische Infektion (PPI) ist eine seltene aber schwerwiegende Komplikation nach Implantation einer H{\"u}ftprothese. Diese Arbeit hat verschiedene Aspekte bez{\"u}glich der Diagnostik und Definition der PPI untersucht. Der prim{\"a}re Fokus lag auf der mikrobiologischen Punktionsdiagnostik und seiner Korrelation mit mikrobiologischen Befunden aus intraoperativen Proben. Zudem war die Gegen{\"u}berstellung der verschiedenen Definitionen einer PPI ein weiterer Schwerpunkt der Arbeit. Des Weiteren wurden auch einige weitere Untersuchungsparameter der PPI untersucht und gegen{\"u}bergestellt.}, language = {de} } @article{SeefriedGenestBaumannetal.2022, author = {Seefried, Lothar and Genest, Franca and Baumann, Jasmin and Heidemeier, Anke and Meffert, Rainer and Jakob, Franz}, title = {Efficacy of Zoledronic Acid in the Treatment of Nonmalignant Painful Bone Marrow Lesions: A Triple-Blind, Randomized, Placebo-Controlled Phase III Clinical Trial (ZoMARS)}, series = {Journal of Bone and Mineral Research}, volume = {37}, journal = {Journal of Bone and Mineral Research}, number = {3}, doi = {10.1002/jbmr.4493}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-276368}, pages = {420 -- 427}, year = {2022}, abstract = {Bone marrow lesions (BML) represent areas of deteriorated bone structure and metabolism characterized by pronounced water-equivalent signaling within the trabecular bone on magnetic resonance imaging (MRI). BML are associated with repair mechanisms subsequent to various clinical conditions associated with inflammatory and non-inflammatory injury to the bone. There is no approved treatment for this condition. Bisphosphonates are known to improve bone stability in osteoporosis and other bone disorders and have been used off-label to treat BML. A randomized, triple-blind, placebo-controlled phase III trial was conducted to assess efficacy and safety of single-dose zoledronic acid (ZOL) 5 mg iv with vitamin D 1000 IU/d as opposed to placebo with vitamin D 1000 IU/d in 48 patients (randomized 2:1) with BML. Primary efficacy endpoint was reduction of edema volume 6 weeks after treatment as assessed by MRI. After treatment, mean BML volume decreased by 64.53\% (±41.92\%) in patients receiving zoledronic acid and increased by 14.43\% (±150.46\%) in the placebo group (p = 0.007). A decrease in BML volume was observed in 76.5\% of patients receiving ZOL and in 50\% of the patients receiving placebo. Pain level (visual analogue scale [VAS]) and all categories of the pain disability index (PDI) improved with ZOL versus placebo after 6 weeks but reconciled after 6 additional weeks of follow-up. Six serious adverse events occurred in 5 patients, none of which were classified as related to the study drug. No cases of osteonecrosis or fractures occurred. Therefore, single-dose zoledronic acid 5 mg iv together with vitamin D may enhance resolution of bone marrow lesions over 6 weeks along with reduction of pain compared with vitamin D supplementation only.}, language = {en} } @article{JakuscheitSchaeferRoedigetal.2021, author = {Jakuscheit, Axel and Schaefer, Nina and Roedig, Johannes and Luedemann, Martin and Hertzberg-Boelch, Sebastian Philipp von and Weissenberger, Manuel and Schmidt, Karsten and Holzapfel, Boris Michael and Rudert, Maximilian}, title = {Modifiable individual risks of perioperative blood transfusions and acute postoperative complications in total hip and knee arthroplasty}, series = {Journal of Personalized Medicine}, volume = {11}, journal = {Journal of Personalized Medicine}, number = {11}, issn = {2075-4426}, doi = {10.3390/jpm11111223}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-250290}, year = {2021}, abstract = {Background: The primary aim of this study was to identify modifiable patient-related predictors of blood transfusions and perioperative complications in total hip and knee arthroplasty. Individual predictor-adjusted risks can be used to define preoperative treatment thresholds. Methods: We performed this retrospective monocentric study in orthopaedic patients who underwent primary total knee or hip arthroplasty. Multivariate logistic regression models were used to assess the predictive value of patient-related characteristics. Predictor-adjusted individual risks of blood transfusions and the occurrence of any perioperative adverse event were calculated for potentially modifiable risk factors. Results: 3754 patients were included in this study. The overall blood transfusion and complication rates were 4.8\% and 6.4\%, respectively. Haemoglobin concentration (Hb, p < 0.001), low body mass index (BMI, p < 0.001) and estimated glomerular filtration rate (eGFR, p = 0.004) were the strongest potentially modifiable predictors of a blood transfusion. EGFR (p = 0.001) was the strongest potentially modifiable predictor of a complication. Predictor-adjusted risks of blood transfusions and acute postoperative complications were calculated for Hb and eGFR. Hb = 12.5 g/dL, BMI = 17.6 kg/m\(^2\), and eGFR = 54 min/mL were associated, respectively, with a 10\% risk of a blood transfusion, eGFR = 59 mL/min was associated with a 10\% risk of a complication. Conclusion: The individual risks for blood transfusions and acute postoperative complications are strongly increased in patients with a low preoperative Hb, low BMI or low eGFR. We recommend aiming at a preoperative Hb ≥ 13g/dL, an eGFR ≥ 60 mL/min and to avoid a low BMI. Future studies must show if a preoperative increase of eGFR and BMI is feasible and truly beneficial.}, language = {en} } @phdthesis{Liebich2022, author = {Liebich, Alina Luisa}, title = {H{\"u}ftgelenksersatz in einem jungen aktiven Patientengut}, doi = {10.25972/OPUS-29016}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-290166}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2022}, abstract = {Einleitung: Der Oberfl{\"a}chenersatz (OE) stellt eine knochensparende alternative Operationstechnik zu der konventionellen Totalendoprothese (TEP) bei H{\"u}ftgelenksarthrose dar. Insbesondere f{\"u}r sehr aktive und junge Patienten werden dem OE Vorteile bei Stabilit{\"a}t und Materialverschleiß zugesprochen. Heterogene Studienergebnisse und eine unzureichende Datenlage hinsichtlich der Langzeitrisiken der Metall-auf-Metall-Gleitpaarung limitieren derzeit den Einsatz des OE. Diese Studie untersucht, ob Patienten nach OE tats{\"a}chlich aktiver sind. Methodik: Es handelt sich um eine retrospektive Arbeit mit prospektiver Datenerhebung im Rahmen eines Telefoninterviews. 40 OEs wurden mit 40 TEPs basierend auf pr{\"a}operativem University of California Arthroplasty Score (UCLA), BMI, Alter zum Zeitpunkt der Operation und Alter bei Follow-up abgeglichen. Die durchschnittliche Nachuntersuchungsperiode war 56 Monate (24-87 Monate). Ergebnisse: OE Patienten zeigten signifikant h{\"o}here Werte im High-Activity Arthroplasty Score (HAAS) (14.9 vs. 12.9, p < 0.001) und Lower Extremity Activity Scale (LEAS) (15.9 vs. 14.1, p = 0.001) und erreichten signifikant h{\"o}here Werte im Hip Cycle Score (HCS) (44.7 vs. 35.7 p = 0.037) und Impact Score (IS) (40.9 vs. 29.6, p = 0.002) als Patienten nach TEP. Es waren keine signifikanten Unterschiede im HOOS Abschnitt Funktionalit{\"a}t (91.4 vs. 90.3, p = 0.803 und Pain Numeric Rating Scale (NRS-11) (0.6 vs. 0.9 p = 0.169) nachweisbar. OE-Patienten zeigten minimal, jedoch signifikant h{\"o}here Werte im modified Harris Hip Score (mHHS) (88,8 vs. 86,6, p = 0.015) Zusammenfassung: Die Ergebnisse legen nahe, dass OE-Patienten mittelfristig aktiver sind und h{\"a}ufiger High-Impact-Sportarten aus{\"u}ben als Patienten nach TEP.}, subject = {H{\"u}ftendoprothetik}, language = {de} } @article{WagenbrennerMayerWagnerRudertetal.2021, author = {Wagenbrenner, Mike and Mayer-Wagner, Susanne and Rudert, Maximilian and Holzapfel, Boris Michael and Weissenberger, Manuel}, title = {Combinations of hydrogels and mesenchymal stromal cells (MSCs) for cartilage tissue engineering — a review of the literature}, series = {Gels}, volume = {7}, journal = {Gels}, number = {4}, issn = {2310-2861}, doi = {10.3390/gels7040217}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-250177}, year = {2021}, abstract = {Cartilage offers limited regenerative capacity. Cell-based approaches have emerged as a promising alternative in the treatment of cartilage defects and osteoarthritis. Due to their easy accessibility, abundancy, and chondrogenic potential mesenchymal stromal cells (MSCs) offer an attractive cell source. MSCs are often combined with natural or synthetic hydrogels providing tunable biocompatibility, biodegradability, and enhanced cell functionality. In this review, we focused on the different advantages and disadvantages of various natural, synthetic, and modified hydrogels. We examined the different combinations of MSC-subpopulations and hydrogels used for cartilage engineering in preclinical and clinical studies and reviewed the effects of added growth factors or gene transfer on chondrogenesis in MSC-laden hydrogels. The aim of this review is to add to the understanding of the disadvantages and advantages of various combinations of MSC-subpopulations, growth factors, gene transfers, and hydrogels in cartilage engineering.}, language = {en} } @article{KrsticHerrmannGadjanskietal.2017, author = {Krstic, Jelena and Herrmann, Marietta and Gadjanski, Ivana and Mojsilovic, Slavko}, title = {Editorial: Microenvironment-derived stem cell plasticity}, series = {Frontiers in Cell and Developmental Biology}, volume = {5}, journal = {Frontiers in Cell and Developmental Biology}, issn = {2296-634X}, doi = {10.3389/fcell.2017.00082}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-197424}, year = {2017}, abstract = {No abstract available.}, language = {en} } @article{MagesShojaaKohletal.2021, author = {Mages, Michelle and Shojaa, Mahdieh and Kohl, Matthias and Stengel, Simon von and Becker, Clemens and Gosch, Markus and Jakob, Franz and Kerschan-Schindl, Katharina and Kladny, Bernd and Kl{\"o}ckner, Nicole and Lange, Uwe and Middeldorf, Stefan and Peters, Stefan and Schoene, Daniel and Sieber, Cornel C. and Tholen, Reina and Thomasius, Friederike E. and Uder, Michael and Kemmler, Wolfgang}, title = {Exercise effects on Bone Mineral Density in men}, series = {Nutrients}, volume = {13}, journal = {Nutrients}, number = {12}, issn = {2072-6643}, doi = {10.3390/nu13124244}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-250247}, year = {2021}, abstract = {In contrast to postmenopausal women, evidence for a favorable effect of exercise on Bone Mineral Density (BMD) is still limited for men. This might be due to the paucity of studies, but also to the great variety of participants and study characteristics that may dilute study results. The aim of the present systematic review and meta-analysis was to evaluate the effect of exercise on BMD changes with rational eligibility criteria. A comprehensive search of six electronic databases up to 15 March 2021 was conducted. Briefly, controlled trials ≥6 months that determined changes in areal BMD in men >18 years old, with no apparent diseases or pharmacological therapy that relevantly affect bone metabolism, were included. BMD changes (standardized mean differences: SMD) of the lumbar spine (LS) and femoral neck (FN) were considered as outcomes. Twelve studies with 16 exercise and 12 control groups were identified. The pooled estimate of random-effect analysis was SMD = 0.38, 95\%-CI: 0.14-0.61 and SMD = 0.25, 95\%-CI: 0.00-0.49, for LS and FN, respectively. Heterogeneity between the trials was low-moderate. Funnel plots and rank and regression correlation tests indicate evidence for small study publication bias for LS but not FN-BMD. Subgroup analyses that focus on study length, type of exercise and methodologic quality revealed no significant difference between each of the three categories. In summary, we provided further evidence for a low but significant effect of exercise on BMD in men. However, we are currently unable to give even rough exercise recommendations for male cohorts.}, language = {en} } @article{KemmlerKohlJakobetal.2020, author = {Kemmler, Wolfgang and Kohl, Matthias and Jakob, Franz and Engelke, Klaus and Stengel, Simon von}, title = {Effects of high intensity dynamic resistance exercise and whey protein supplements on osteosarcopenia in older men with low bone and muscle mass. Final results of the randomized controlled FrOST study}, series = {Nutrients}, volume = {12}, journal = {Nutrients}, number = {8}, issn = {2072-6643}, doi = {10.3390/nu12082341}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-211108}, year = {2020}, abstract = {The present study aimed to evaluate the effect of high intensity dynamic resistance exercise (HIT-DRT) and whey protein supplementation (WPS) on bone mineral density (BMD) and sarcopenia parameters in osteosarcopenic men. Men ≥ 72 years with osteosarcopenia (n = 43) were randomly assigned to a HIT-RT (HIT-RT: n = 21) or a non-training control group (n = 22). Supervised HIT-RT twice/week was applied for 18 months, while the control group maintained their habitual lifestyle. Supplying WPS, total protein intake amounted to 1.5-1.6 (HIT-RT) and 1.2 g/kg/body mass/d (control). Both groups were supplied with calcium and vitamin D. Primary study outcomes were BMD and the sarcopenia Z-score. After adjusting for multiplicity, we observed significant positive effects for sarcopenia Z-score (standardized mean difference (SMD): 1.40), BMD at lumbar spine (SMD: 0.72) and total hip (SMD: 0.72). In detail, effect sizes for skeletal muscle mass changes were very pronounced (1.97, p < 0.001), while effects for functional sarcopenia parameters were moderate (0.87, p = 0.008; handgrip strength) or low (0.39, p = 0.209; gait velocity). Apart from one man who reported short periods of temporary worsening of existing joint pain, no HIT-RT/WPS-related adverse effects or injuries were reported. We consider HIT-RT supported by whey protein supplementation as a feasible, attractive, safe and highly effective option to fight osteosarcopenia in older men.}, language = {en} } @article{StreckGaalForsteretal.2021, author = {Streck, Laura Elisa and Gaal, Chiara and Forster, Johannes and Konrads, Christian and Hertzberg-Boelch, Sebastian Philipp von and Rueckl, Kilian}, title = {Defining a synovial fluid white blood cell count threshold to predict periprosthetic infection after shoulder arthroplasty}, series = {Journal of Clinical Medicine}, volume = {11}, journal = {Journal of Clinical Medicine}, number = {1}, issn = {2077-0383}, doi = {10.3390/jcm11010050}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-252275}, year = {2021}, abstract = {Background: The diagnosis of periprosthetic shoulder infection (PSI) requires a thorough diagnostic workup. Synovial fluid aspiration has been proven to be a reliable tool in the diagnosis of joint infections of the lower extremity, but shoulder specific data is limited. This study defines a threshold for synovial fluid white blood cell count (WBC) and assesses the reliability of microbiological cultures. Methods: Retrospective study of preoperative and intraoperative fluid aspiration of 31 patients who underwent a revision of a shoulder arthroplasty (15 with PSI defined by IDSA criteria, 16 without infection). The threshold for WBC was calculated by ROC/AUC analysis. Results: WBC was significantly higher in patients with PSI than in other patients. A threshold of 2800 leucocytes/mm\(^3\) showed a sensitivity of 87\% and a specificity of 88\% (AUROC 0.92). Microbiological cultures showed a sensitivity of 76\% and a specificity of 100\%. Conclusions: A threshold of 2800 leucocytes/mm\(^3\) in synovial fluid can be recommended to predict PSI. Microbiological culture has an excellent specificity and allows for targeted antibiotic therapy. Joint aspiration presents an important pillar to diagnose PSI.}, language = {en} } @article{NedopilDelmanHowelletal.2021, author = {Nedopil, Alexander J. and Delman, Connor and Howell, Stephen M. and Hull, Maury L.}, title = {Restoring the patient's pre-arthritic posterior slope is the correct target for maximizing internal tibial rotation when implanting a PCL retaining TKA with calipered kinematic alignment}, series = {Journal of Personalized Medicine}, volume = {11}, journal = {Journal of Personalized Medicine}, number = {6}, issn = {2075-4426}, doi = {10.3390/jpm11060516}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-240996}, year = {2021}, abstract = {Introduction: The calipered kinematically-aligned (KA) total knee arthroplasty (TKA) strives to restore the patient's individual pre-arthritic (i.e., native) posterior tibial slope when retaining the posterior cruciate ligament (PCL). Deviations from the patient's individual pre-arthritic posterior slope tighten and slacken the PCL in flexion that drives tibial rotation, and such a change might compromise passive internal tibial rotation and coupled patellofemoral kinematics. Methods: Twenty-one patients were treated with a calipered KA TKA and a PCL retaining implant with a medial ball-in-socket and a lateral flat articular insert conformity that mimics the native (i.e., healthy) knee. The slope of the tibial resection was set parallel to the medial joint line by adjusting the plane of an angel wing inserted in the tibial guide. Three trial inserts that matched and deviated 2°> and 2°< from the patient's pre-arthritic slope were 3D printed with goniometric markings. The goniometer measured the orientation of the tibia (i.e., trial insert) relative to the femoral component. Results: There was no difference between the radiographic preoperative and postoperative tibial slope (0.7 ± 3.2°, NS). From extension to 90° flexion, the mean passive internal tibial rotation with the pre-arthritic slope insert of 19° was greater than the 15° for the 2°> slope (p < 0.000), and 15° for the 2°< slope (p < 0.000). Discussion: When performing a calipered KA TKA with PCL retention, the correct target for setting the tibial component is the patient's individual pre-arthritic slope within a tolerance of ±2°, as this target resulted in a 15-19° range of internal tibial rotation that is comparable to the 15-18° range reported for the native knee from extension to 90° flexion.}, language = {en} } @phdthesis{Heinz2022, author = {Heinz, Tizian}, title = {Das Knorpelregister DGOU zur systematischen Patientenerfassung nach knorpelchirurgischen Eingriffen des Kniegelenkes - Analyse und wissenschaftliche Aufarbeitung der ersten 100 Patienten an der Orthop{\"a}dischen Klinik K{\"o}nig-Ludwig-Haus}, doi = {10.25972/OPUS-28288}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-282882}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2022}, abstract = {Die stark limitierte intrinsische Regenerationsf{\"a}higkeit des hyalinen Gelenkknorpels stellt auch in der modernen Medizin eine große Herausforderung dar. W{\"a}hrend eine Vielzahl von knorpelchirurgischen Techniken am Kniegelenk koexistieren, bleibt die Selektion des am besten geeigneten Therapieverfahrens eine zentrale Herausforderung des orthop{\"a}dischen Chirurgen. Hierzu bieten in Zeiten evidenzbasierter Medizin medizinische Register die M{\"o}glichkeit, klinische Behandlungsdaten systematisch in einem breiten Patientenkollektiv zu erfassen, die klinische Versorgungsrealit{\"a}t ad{\"a}quat abzubilden sowie neue Behandlungsstrategien und Hypothesen zu generieren. Das Knorpelregister der DGOU bietet als webbasierte Registerform eine besonders moderne, effiziente und unb{\"u}rokratische Form der Patientennachverfolgung {\"u}ber subjektiv bewertete und validierte Funktionsscores. F{\"u}r das gesamte Registerkollektiv von 100 Patienten an der Orthop{\"a}dischen Klinik-K{\"o}nig-Ludwig Haus ergaben sich bereits sechs Monate nach dem knorpelchirurgischen Eingriff signifikant h{\"o}here Funktionsscores im IKDC und KOOS, welche sich auch im mittelfristigen Verlauf von zw{\"o}lf Monaten noch signifikant erh{\"o}ht gegen{\"u}ber ihren pr{\"a}operativen Werten zeigten. Die mediale Femurkondyle und knorpelige Patellar{\"u}ckfl{\"a}che waren im Registerkollektiv am h{\"a}ufigsten von Defekten betroffen. Meist handelte es sich hierbei um drittgradige Defekte nach ICRS degenerativer Genese. W{\"a}hrend das mechanische D{\´e}bridement bei großfl{\"a}chigem, arthrotischem Gelenkknorpelverschleiß keine suffiziente Therapieoption bietet, ist zum Nutzen und Effektivit{\"a}t des D{\´e}bridements bei fokalen, umschriebenen Gelenkknorpeldefekten bisher nur wenig bekannt. Im Registerkollektiv zeigte sich f{\"u}r das isoliert mechanische D{\´e}bridement von Gelenkknorpeldefekten eine signifikante Verbesserung der subjektiven Funktionsscores. Im Falle begleitend durchgef{\"u}hrter meniskuschirurgischer Eingriffe zeigt sich die Datenlage deutlich heterogener und bietet Anlass f{\"u}r weiteren wissenschaftlichen Diskurs.}, subject = {Hyaliner Knorpel}, language = {de} } @phdthesis{Braag2022, author = {Braag, Aaron}, title = {10 Jahres Ergebnisse nach muskelschonendem modifiziertem Watson Jones Zugang bei der Implantation von H{\"u}fttotalendoprothesen}, doi = {10.25972/OPUS-28141}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-281416}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2022}, abstract = {Bei der Implantation von H{\"u}fttotalendoprothesen (HTEP) finden seit etwa 15 Jahren minimalinvasive muskelschonende Zug{\"a}nge zunehmend Verwendung. Langfristige Daten der Zug{\"a}nge, insbesondere des minimalinvasiven anterolateralen Zuganges nach Watson-Jones (ALMI) sind in der Literatur bisher nur unzureichend vorhanden. Methodik: Ziel dieser Studie war es ein Kollektiv nach HTEP Implantation mit ALMI Zugang mit einem Kollektiv nach HTEP Implantation mit lateralem Zugang nach 10 Jahren hinsichtlich Gelenksfunktion, Muskelfunktion, Zufriedenheit und radiologischer Parameter zu vergleichen und etwaige Unterschiede in der Langzeitbilanz zu detektieren. Zwei Kollektive mit jeweils 29 operierten H{\"u}ftgelenken, Erstimplantation durch die gleichen Operateure in den Jahren 2005 bis 2008, wurden im Diakoniewerk M{\"u}nchen-Maxvorstadt nachuntersucht. Die daf{\"u}r herangezogenen Parameter waren Harris Hip Score, Forgotten Joint Score-12, klinische Pr{\"u}fung des Trendelenburg Zeichens, postoperative R{\"o}ntgenbildgebung, Auftreten von Komplikationen und Narbenl{\"a}nge. Ergebnisse \& Schlussfolgerungen: Die beiden Kollektive zeigten in den Parametern Harris Hip Score, Forgotten Joint Score und klinische Pr{\"u}fung des Trendelenburg Zeichens geringf{\"u}gige Unterschiede zugunsten des ALMI Kollektivs, die jedoch nicht signifikant waren. Beide Kollektive erreichten in den beschriebenen Scores sehr gute bis exzellente Ergebnisse nach 10 Jahren. Das geringere Auftreten eines auff{\"a}lligen Trendelenburg Zeichens im ALMI Kollektiv (13,8 vs. 6,9 \%) gibt Hinweise auf eine verbesserte Funktion der Glutealmuskulatur durch die intraoperative Muskelschonung. Die beiden Zug{\"a}nge zeigten in den radiologischen Parametern und der Komplikationsrate ebenb{\"u}rtige Ergebnisse. Vermehrte Fehlpositionierungen wurden im ALMI Kollektiv nicht beobachtet. Unsere Beobachtungen passen zu den wenigen vorhandenen in der Literatur beschriebenen Ergebnissen von minimalinvasiven muskelschonenden Zug{\"a}ngen in der Langzeitbilanz.}, subject = {Minimalinvasiv}, language = {de} } @phdthesis{Oberfeld2022, author = {Oberfeld, Jan}, title = {Einfluss der Mobilisierung am Operationstag nach Implantation einer prim{\"a}ren H{\"u}fttotalendoprothese}, doi = {10.25972/OPUS-28107}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-281074}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2022}, abstract = {Die Implantation einer H{\"u}fttotalendoprothese ist eine der erfolgreichsten operativen Eingriffe der letzten Jahrzehnte. Aufgrund der demografischen Entwicklung und exzellenter postoperativer Ergebnisse wird die Anzahl dieser Eingriffe in den n{\"a}chsten Jahren weiter zunehmen. So kommen Fast-Track-Programme mehr und mehr zur Anwendung, um die postoperative Mobilit{\"a}t der Patient/-innen zu verbessern und eine fr{\"u}hzeitige Entlassungsbereitschaft zu erm{\"o}glichen. Neben einer ad{\"a}quaten Schmerztherapie nimmt dabei die fr{\"u}he Mobilisierung eine zentrale Rolle ein, wobei {\"a}ltere, adip{\"o}se und schwer erkrankte Patient/-innen h{\"a}ufig von einer Fr{\"u}hmobilisierung ausgeschlossen werden. So konnten die Ergebnisse dieser Studie die Effektivit{\"a}t einer Fr{\"u}hmobilisierung best{\"a}tigen und nachweisen, dass nach Implantation einer prim{\"a}ren H{\"u}fttotalendoprothese die bereits am Operationstag beginnende Mobilisierung mit einer signifikant k{\"u}rzeren RFD verbunden war. Zudem waren die fr{\"u}hmobilisierten Patient/-innen in Bezug auf ihre Mobilit{\"a}t w{\"a}hrend der ersten f{\"u}nf Tage nach der Operation im Vorteil. Eine vermehrte Schmerzsymptomatik, ein vermehrter Schmerzmittelkonsum oder eine h{\"o}here Komplikationsrate konnte w{\"a}hrend des station{\"a}ren Aufenthaltes nicht dargestellt werden. Auch bei {\"a}lteren, adip{\"o}sen und schwer erkrankten Patient/-innen ließ sich nach sofortiger postoperativer Mobilisierung ein positiver Effekt nachweisen. W{\"a}hrend die Komplikationsrate durch die bereits am Operationstag beginnende Mobilisierung verringert werden konnte, waren die RFD-Unterschiede in allen Untergruppen gr{\"o}ßer, so dass im Rahmen von Fast-Track-Programmen diese Patient/-innen aus o. g. Gr{\"u}nden nicht von einer fr{\"u}hen Mobilisierung ausgeschlossen werden sollten.}, subject = {Fr{\"u}hmobilisierung}, language = {de} } @phdthesis{Herkert2022, author = {Herkert, Peter}, title = {Effektivit{\"a}t und Risiken von nichtsteroidalen Antirheumatika zur Pr{\"a}vention vor Heterotoper Ossifikation nach prim{\"a}rer H{\"u}fttotalendoprothetik: Ein systematischer Review}, doi = {10.25972/OPUS-27976}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-279764}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2022}, abstract = {Hintergrund: Heterotope Ossifikation (HO) stellt, mit einer Inzidenz von bis zu 90 \%, eine h{\"a}ufige Komplikation nach H{\"u}fttotalendoprothetik dar. F{\"u}r h{\"o}hergradige HO mit klinischer Relevanz (schwere HO) wird eine Inzidenz von bis zu 20 \% berichtet. Durch eine Prophylaxe, mit nichtsteroidalen Antirheumatika (NSAID) oder Strahlentherapie, kann die Inzidenz f{\"u}r schwere HO auf 1 bis 5 \% gesenkt werden. Aus {\"o}konomischen und logistischen Gesichtspunkten erfolgt bevorzugt eine Prophylaxe mit NSAID. Es liegen jedoch nur wenige Informationen zur Auswahl des Wirkstoffes, der Therapiedauer und der Dosierung vor. Methoden: Ziel war die Bewertung der Wirksamkeit und Sicherheit verschiedener Interventionen mit NSAID, f{\"u}r die prim{\"a}ren Endpunkte schwere HO und unerw{\"u}nschte Arzneimittelwirkung (UAW). Hierzu war eine systematische {\"U}bersichtsarbeit mit Netzwerk-Metaanalyse geplant. Es wurden 31 Studien mit 5128 Patienten eingeschlossen. Hieraus wurde ein Netzwerk aus 15 Knotenpunkten mit 44 Vergleichen erstellt. Die Studien wiesen eine ausgepr{\"a}gte Heterogenit{\"a}t auf. Das Biasrisiko wurde h{\"a}ufig als unklar oder hoch bewertet. Eine Netzwerk-Metaanalyse konnte aufgrund der festgestellten Inkoh{\"a}renz mit schwachen Verbindungen nicht durchgef{\"u}hrt werden. Es erfolgten ausschließlich Analysen der direkten Vergleiche. Ergebnisse: Die Analysen zeigten, dass bereits eine kurze Interventionsdauer (bis 7 Tage) mit geringer Tagesdosis einen signifikanten Effekt zur Prophylaxe vor schwerer HO, bei nicht erh{\"o}htem Risiko f{\"u}r schwere UAW aufweist. Ein {\"u}berlegener Wirkstoff konnte nicht identifiziert werden. Zusammenfassung: Die Evidenz dieser Dissertation wird als gering eingestuft, da aufgrund der spezifischeren Fragestellung als in den eingeschlossenen Studien, eine unzureichende Power bei den Analysen vorlag. Weitere qualitativ hochwertige RCT mit klinisch orientierter Fragestellung sind erforderlich, um die Frage nach einer optimalen Prophylaxe vor schwerer HO zu beantworten.}, subject = {Nichtsteroidales Antiphlogistikum}, language = {de} } @phdthesis{Biedermann2022, author = {Biedermann, Gerhard Andreas}, title = {Charakterisierung der Regulation des kontaktinduzierten Targets ANGPTL-4 zur Steigerung der Sensitivit{\"a}t von Bildgebung und Therapie}, doi = {10.25972/OPUS-27844}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-278440}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2022}, abstract = {Angiopoetin-like 4 (ANGPTL-4) ist ein Adipokin, das in der extrazellul{\"a}ren Matrix lokalisiert ist und das neben seinen Aufgaben im Fettstoffwechsel auch die Zellmigration, Zellinvasion und die Angioneogenese reguliert. Da es zus{\"a}tzlich auch den Knochenabbau f{\"o}rdert, wirkt es als Tumorpromotor speziell f{\"u}r Knochentumore. Aufgrund der gesteigerten Expression in Tumorgewebe ist es potenzielles Ziel f{\"u}r molekulare Bildgebung. Mittels Expressionsanalysen auf mRNA- und Proteinebene sollte ein besseres Verst{\"a}ndnis der Regulation von ANGPTL-4 erreicht werden. Dexamethason und die 9-cis-Retins{\"a}ure beeinflussten die Expression von ANGPTL-4 in MDA Zellen im positiven Sinne, wohingegen der Adenylatcyclase Aktivator Forskolin die Expression supprimierte. In MCF-7 Zellen wurde ANGPTL-4 durch den Phorbolester PMA und durch den Epidermalen Wachstumsfaktor (EGF) induziert. Eine Modulation von ANGPTL-4 k{\"o}nnte von klinischem Nutzen sein, speziell bei der Behandlung von Knochentumoren. Zus{\"a}tzlich k{\"o}nnte die Trennsch{\"a}rfe von molekularen bildgebenden Verfahren gesteigert werden.}, subject = {Brustkrebs}, language = {de} } @phdthesis{LoerlergebSichermann2022, author = {L{\"o}rler [geb. Sichermann], Anna Ramona}, title = {Versagensanalyse prim{\"a}rer H{\"u}ftendoprothesen}, doi = {10.25972/OPUS-27533}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-275331}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2022}, abstract = {Einleitung: Der endoprothetische H{\"u}ftgelenksersatz z{\"a}hlt in Deutschland und weltweit zu den am h{\"a}ufigsten praktizierten operativen Eingriffen, wobei die Erfolgszahlen gleichzeitig sehr hoch sind bei stetiger Verbesserung der verwendeten alloplastischen Materialien und angewandten operativen Technik. Daher ist in Zukunft weiter mit einer steigenden Implantationszahl zu rechnen, was das Gesundheitssystem vor weitere sozio{\"o}konomische Herausforderungen stellt. Vor diesem Hintergrund ist es bedeutsam, die Ursachen f{\"u}r das Versagen von H{\"u}ftendoprothesen weiter im Auge zu behalten und n{\"a}her zu erl{\"a}utern. Material und Methoden: Es handelt sich um eine retrospektive Datenanalyse. Eingeschlossen wurden Daten von 785 Patienten, davon 440 weiblich und 345 m{\"a}nnlich, die im Zeitraum von 2007 bis 2016 im K{\"o}nig-Ludwig-Haus, der orthop{\"a}dischen Klinik der Universit{\"a}t W{\"u}rzburg, eine prim{\"a}re Revision ihrer H{\"u}ftendoprothese erhielten. Folgende Daten wurden erhoben: Patientenalter, Standzeit der Prothese, Indexdiagnose, Revisionsgrund, Prothesentyp und Art der Revision. Ergebnisse: Das mittlere Alter bei der Indexdiagnose der Gesamtpopulation betrug 62,2 Jahre, bei der Revision 69,5 Jahre. Es ergab sich eine durchschnittliche Standzeit der Prothese von 88,0 Monaten im Gesamtkollektiv. Die h{\"a}ufigste Indexdiagnose, die zur Implantation der H{\"u}ftprothese f{\"u}hrte, war Coxarthrose mit 81,4\%. Der h{\"a}ufigste Grund f{\"u}r ein Versagen der Prothese war mit 39,4\% die Lockerung der Prothese. Zu 67,7\% wurde die Prothese zementfrei implantiert. Am h{\"a}ufigsten wurde eine Revision am femoralen Prothesenanteil durchgef{\"u}hrt mit 34,1\%. Zusammenfassung: Insgesamt ergab sich aus den Daten, dass die Prothesen eine vergleichbar gute Standzeit im internationalen Vergleich aufwiesen. Es zeigte sich, dass die meisten Versagensursachen bereits fr{\"u}h nach Implantation der prim{\"a}ren Prothese in Erscheinung treten, jedoch die Prothesenlockerung als h{\"a}ufigster Grund erst sp{\"a}ter im Verlauf bedeutsam f{\"u}r die Revisionsendoprothetik wird.}, subject = {H{\"u}ftendoprothese}, language = {de} } @article{NedopilShekharHowelletal.2021, author = {Nedopil, Alexander J. and Shekhar, Adithya and Howell, Stephen M. and Hull, Maury L.}, title = {An insert with less than spherical medial conformity causes a loss of passive internal rotation after calipered kinematically aligned TKA}, series = {Archives of Orthopaedic and Trauma Surgery}, volume = {141}, journal = {Archives of Orthopaedic and Trauma Surgery}, number = {12}, issn = {1434-3916}, doi = {10.1007/s00402-021-04054-0}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-266710}, pages = {2287-2294}, year = {2021}, abstract = {Introduction In total knee arthroplasty (TKA), the level of conformity, a medial stabilized (MS) implant, needs to restore native (i.e., healthy) knee kinematics without over-tensioning the flexion space when the surgeon chooses to retain the posterior cruciate ligament (PCL) is unknown. Whether an insert with a medial ball-in-socket conformity and lateral flat surface like the native knee or a less than spherical medial conformity restores higher and closer to native internal tibial rotation without anterior lift-off, an over-tension indicator, when implanted with calipered kinematic alignment (KA), is unknown. Methods and Materials Two surgeons treated 21 patients with calipered KA and a PCL retaining MS implant. Validated verification checks that restore native tibial compartment forces in passive flexion without release of healthy ligaments were used to select the optimal insert thickness. A goniometer etched onto trial inserts with the ball-in-socket and the less than spherical medial conformity measured the tibial rotation relative to the femoral component at extension and 90° and 120° flexion. The surgeon recorded the incidence of anterior lift-off of the insert. Results The insert with the medial ball-in-socket and lateral flat surface restored more internal tibial rotation than the one with less than spherical medial conformity, with mean values of 19° vs. 17° from extension to 90° flexion (p < 0.01), and 23° vs. 20°-120° flexion (p < 0.002), respectively. There was no anterior lift-off of the insert at 90° and 120° flexion. Conclusion An MS insert with a medial ball-in-socket and lateral flat surface that matches the native knee's spherical conformity restores native tibial internal rotation when implanted with calipered KA and PCL retention without over-tensioning the flexion space.}, language = {en} } @phdthesis{BegergebPapazoglou2022, author = {Beger [geb. Papazoglou], Jannis}, title = {Korrelation der Offsetver{\"a}nderung mit dem patientenberichteten subjektiven Outcome bei zementfreier totalendoprothetischer Versorgung der Coxarthrose - eine vergleichende klinische und radiologische Analyse}, doi = {10.25972/OPUS-27215}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-272151}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2022}, abstract = {Die Arbeit untersucht Zusammenh{\"a}nge zwischen der Ver{\"a}nderung geometrischer Parameter (gemessen an R{\"o}ntgenaufnahmen) des H{\"u}ftgelenks durch den endoprothetischen Eingriff (prim{\"a}re zementfreien H{\"u}ft-TEP) und dem patientenberichteten Outcome (EuroQol und WOMAC-Scores pr{\"a}- sowie ein Jahr postoperativ) zu untersuchen. Hierzu wurden 655 Patienten (w: 336, m: 319) eingeschlossen (OP- Zeitraum von 2012-2014). Im Mittel wurde der globale Offset (GO) um -1,14mm verringert (Vergr{\"o}ßerung des femoralen Offset (FO) durch den Eingriff um +4,61 mm und Verminderung des acetabul{\"a}ren Offsets (AO) um -5,74 mm). Bei den Frauen zeigte sich eine Vergr{\"o}ßerung des GO um +0,27 mm (AO -5,08 mm und FO +5,37 mm), bei den M{\"a}nner eine Verkleinerung des GO um -2,62 mm (AO -6,43 mm und FO 3,81 mm). In der Gesamtgruppe zeigten die Parameter der horizontalen Achse AO und FO keine Korrelationen zum Outcome. Jedoch konnte f{\"u}r den GO eine Korrelation zum EuroQol nachgewiesen werden (r=0,097; p<0,05) nachgewiesen werden. In der Gruppe der Frauen konnte eine positive Korrelation zwischen dem AO und dem WOMAC-Gesamtscore (r= 0,132; p<0,05) sowie den Subscores Schmerz (r=0,113; p<0,05) und Funktion (r=0,125; p<0,05) nachgewiesen werden. Die Ergebnisse best{\"a}tigen den Vorteil einer Medialisierung der Pfanne. Bei der Analyse der Parameter der vertikale Achse (vertikaler Offset (VO), H{\"u}ftl{\"a}nge (HL), Hip Center Height (HCH)) ergab sich in der Gesamtgruppe eine negative Korrelation des VO mit den WOMAC-Gesamtscore-Werten (r=-0,109; p<0,01) und den Werten des Subscores WOMAC-Schwierigkeit (r=0,106; p<0,01). Bei der HCH zeigte sich eine schwach positive Korrelation mit dem Subscore WOMAC-Schwierigkeit (r=0,081; p<0,05) und mit dem EurQol (r=0,0117; p<0,01). In der Subgruppe der Frauen ergaben sich bei der HCH eine Korrelation mit dem WOMAC-Gesamtscore (r=0,109; p<0,05) und dem Subscore WOMAC-Funktion (r=0,125; p<0,05). Die HL korrelierte in der Gruppe der M{\"a}nner negativ mit dem WOMAC-Steifheit (r= -0,137; p<0,05). Die Daten bez{\"u}glich der vertikalen Achse deuten darauf hin, dass eine Vergr{\"o}ßerung des vertikalen Offsets sinnvoll zu sein scheint. Bez{\"u}glich der diagonalen Achse konnte f{\"u}r den diagonalen Offset (def. als Vektor von GO und BL) ein positiver Zusammenhang mit dem EuroQol (r=0,110; p<0,01) nachgewiesen werden.}, language = {de} } @phdthesis{Frenzel2022, author = {Frenzel, Stephan}, title = {Operative Behandlung von Beckendiskontinuit{\"a}t bei liegender H{\"u}ftendoprothese mittels asymmetrischem Pfannenimplantat mit intra- und extramedull{\"a}rer Fixierung}, doi = {10.25972/OPUS-27375}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-273756}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2022}, abstract = {EINLEITUNG: H{\"u}ftrevisionseingriffe nehmen in den letzten Jahren stetig zu. Eine Beckendiskontinuit{\"a}t (PD „pelvic discontinuity") stellt dabei eines der herausforderndsten Szenarien dar. Wir berichten {\"u}ber unsere klinischen Ergebnisse mit einer asymmetrischen H{\"u}ftpfannenkomponente zur Behandlung der PD. Das Implantat ist mit einer extramedull{\"a}ren anatomisch geformten Lasche ausgestattet, die an der glutealen Oberfl{\"a}che des Iliums fixiert wird. Eine zus{\"a}tzliche Fixierung kann durch die Implantation eines intramedull{\"a}ren iliakalen Darmbeinzapfens erfolgen. MATERIAL UND METHODEN: In einer monozentrischen retrospektiven Kohortenstudie analysierten wir prospektiv erhobene Daten von 49 Pat. (35 weiblich, 14 m{\"a}nnlich) mit unilateraler periprothetischer Beckendiskontinuit{\"a}t, die 2009-2017 mittels einer asymmetrischen Acetabulumkomponente operativ behandelt wurden. Das mittlere Alter der Betroffenen zum Zeitpunkt der Indexoperation betrug 72 Jahre (54- 90 Jahre). Die mittlere Nachbeobachtungszeit lag bei 71 Monaten (21-114 Monate). S{\"a}mtliche in der Folge aufgetretenen Komplikationen wurden dokumentiert und die radiologischen und funktionellen Ergebnisse (anhand des Harris Hip Scores (HHS) sowie der visuellen Analogskala f{\"u}r Schmerz (VAS)) wurden ausgewertet. ERGEBNISSE: Mittels Kaplan-Meier-Analyse konnte f{\"u}r unsere Studiengruppe ein 5-Jahres-Implantat{\"u}berleben von 91\% (Konfidenzintervall 77\%-96\%) festgestellt werden). Der mittlere HHS verbesserte sich in unserem Patient*innenkollektiv von 41 pr{\"a}operativ auf 79 bei der letzten Nachuntersuchung (p< .001); die VAS verbesserte sich hochsignifikant von einem Mittelwert von sechs pr{\"a}operativ auf postoperativ eins (p< .001). Die Gesamtrevisionsrate betrug 16\% (n=8). Zwei der Pat. ben{\"o}tigten eine Revision bei aseptischer Lockerung. Bei vier Pat. (8\%) wurde eine periprothetische Infektion festgestellt: ein Patient wurde deshalb mit einer zweizeitigen Revision und ein weiterer mit einer Resektionsarthroplastik behandelt. Die anderen zwei Pat. wurden jeweils mit einem chirurgischen Eingriff im Sinne eines Debridements, ausgiebiger Sp{\"u}lung sowie dem Austausch der mobilen Teile behandelt. Von sechs Pat. (12\%), die eine H{\"u}ftluxation erlitten, war bei zweien die Implantation einer Dual-Mobility-Acetabulumkomponente erforderlich. DISKUSSION: Wir konnten f{\"u}r die Implantation des hier beschriebenen Systems gute Ergebnisse f{\"u}r einen mittelfristigen Nachuntersuchungszeitraum nachweisen. In Zukunft k{\"o}nnte diese Technik die bereits etablierten Vorgehensweisen zur Behandlung der chronischen Beckendiskontinuit{\"a}t erg{\"a}nzen und auch bei Pat. mit akut auftretender Diskontinuit{\"a}t oder periprothetischer Acetabulumfraktur eingesetzt werden.}, subject = {Beckenchirurgie}, language = {de} } @phdthesis{Hausmann2022, author = {Hausmann, Johannes Stephan}, title = {Schmerzverlauf, k{\"o}rperliche Aktivit{\"a}t und Funktion pr{\"a}operativ, drei, sechs und zw{\"o}lf Monate nach minimal-invasiver H{\"u}fttotalendoprothetik mittels direktem anterioren Zugang}, doi = {10.25972/OPUS-27248}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-272486}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2022}, abstract = {Hintergrund: Die vorgestellten Daten demonstrieren das klinische Ergebnis von Patienten, die sich eine H{\"u}fttotalendoprothese (THA) unterzogen haben. Als Zugangsweg wurde der minimal-invasive, direkt anteriore Zugang in Einzelschnitttechnik gew{\"a}hlt (MIS-DAA). Die Patientin wurden bis zw{\"o}lf Monate nach Operation beobachtet. Methoden: Es wurden die Daten von 73 Probanden mittels der folgenden Fragebogen ausgewertet: Harris Hip Score (HHS), eXtra Short Musculoskeletal Functional Assessment questionnaire (XSFMA), Short Form 36 (SF-36) health survey und Patient Health Questionaire 9 „deutsch" (PHQ-9 D). Zur Schmerzmessung kam eine visuelle Analogskala (VAS von 0-4) zum Einsatz. Daneben wurde die Aktivit{\"a}t mit Hilfe des Schrittz{\"a}hlers Stepwatch™ Activity Monitor (SAM) und eines 25m Gehtests auf Zeit (T25-FW) erfasst. W{\"a}hrend der gesamten Aufzeichnung wurden auch Komplikationen erfasst. Ergebnisse: Zw{\"o}lf Monate nach der Operation verbesserten sich die HHS-Werte signifikant von 55,2 pr{\"a}operativ auf 92,4 (Werte 0 - 100). Der FSFMA Funktionsscore fiel ebenfalls signifikant von 39,4 auf 10,3 und der Beeintrachtigungsscore von 47,0 auf 15,8. Der Score f{\"u}r die Physis (PCS) stieg im SF 36 signifikant von 27,5 pr{\"a}operativ auf 47,5 nach zw{\"o}lf Monaten. Der Score f{\"u}r mentale Gesundheit (MCS) fiel dagegen sogar leicht von 57,6 auf 55,0. Dagegen fiel die Pr{\"a}valenz der mittels PHQ-9 D gemessenen Somatisierungsst{\"o}rungen von elf auf einen Fall. Die Schmerzreduktion durch die Operation zeigte sich durch einen R{\"u}ckgang auf der VAS von 2,41 auf 0,35 zw{\"o}lf Monate postoperativ. Die durchschnittlich t{\"a}glich absolvierten Lastwechsel nahmen laut Schrittz{\"a}hlermessung signifikant von 5113 pr{\"a}operativ auf 6402 zu. Außerdem stieg die Gehgeschwindigkeit im T25-FW signifikant von 22,06 s (= 1,13 m/s) auf 18,14 s (= 1,38 m/s). Es wurden keine schwerwiegenden Komplikationen, wie z.B. Transplantatlockerungen, festgestellt. Zusammenfassung: In der Zusammenschau der Ergebnisse zeigt sich ein Jahr nach MIS-DAA-THA, dass die Patienten eine signifikant bessere Funktion, Aktivit{\"a}t und weniger Schmerzen aufweisen. Der MIS-DA-Zugang ist sicher und weist keine erh{\"o}hte Komplikationsrate auf.}, subject = {H{\"u}ftgelenkprothese}, language = {de} } @article{HerrmannEngelkeEbertetal.2020, author = {Herrmann, Marietta and Engelke, Klaus and Ebert, Regina and M{\"u}ller-Deubert, Sigrid and Rudert, Maximilian and Ziouti, Fani and Jundt, Franziska and Felsenberg, Dieter and Jakob, Franz}, title = {Interactions between muscle and bone — Where physics meets biology}, series = {Biomolecules}, volume = {10}, journal = {Biomolecules}, number = {3}, issn = {2218-273X}, doi = {10.3390/biom10030432}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-203399}, year = {2020}, abstract = {Muscle and bone interact via physical forces and secreted osteokines and myokines. Physical forces are generated through gravity, locomotion, exercise, and external devices. Cells sense mechanical strain via adhesion molecules and translate it into biochemical responses, modulating the basic mechanisms of cellular biology such as lineage commitment, tissue formation, and maturation. This may result in the initiation of bone formation, muscle hypertrophy, and the enhanced production of extracellular matrix constituents, adhesion molecules, and cytoskeletal elements. Bone and muscle mass, resistance to strain, and the stiffness of matrix, cells, and tissues are enhanced, influencing fracture resistance and muscle power. This propagates a dynamic and continuous reciprocity of physicochemical interaction. Secreted growth and differentiation factors are important effectors of mutual interaction. The acute effects of exercise induce the secretion of exosomes with cargo molecules that are capable of mediating the endocrine effects between muscle, bone, and the organism. Long-term changes induce adaptations of the respective tissue secretome that maintain adequate homeostatic conditions. Lessons from unloading, microgravity, and disuse teach us that gratuitous tissue is removed or reorganized while immobility and inflammation trigger muscle and bone marrow fatty infiltration and propagate degenerative diseases such as sarcopenia and osteoporosis. Ongoing research will certainly find new therapeutic targets for prevention and treatment.}, language = {en} }