@phdthesis{Leiblein2015,
  author    = {Leiblein, Maximilian},
  title     = {MPFL-Rekonstruktion mit autologer Gracilissehne bei Patellaluxation},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-124273},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year      = {2015},
  abstract  = {Die patellofemorale Instabilit{\"a}t bzw. die Patellaluxation hat eine Inzidenz von 7 - 49 pro 100.000 Einwohner und verursacht 2-3\% aller Knieverletzungen. {\"U}ber 10\% der muskuloskelettalen Symptome werden durch die patellofemorale Instabilit{\"a}t verursacht. Die {\"A}tiologie der Patellaluxation ist stets multifaktoriell, als Risikofaktoren gelten jedoch die Trochleadysplasie, ein erh{\"o}hter Patellatilt, die Patella alta, ein erh{\"o}hter TTTG- Abstand und die Beschaffenheit des Ligamentum patellofemorale mediale. Zur Therapie eignen sich je nach individueller Symptomatik und Risikofaktoren sowohl konservative als auch operative Maßnahmen. In den letzten Jahren wurden zahlreiche Operationsmethoden und -techniken mit unterschiedlichem Ansatz und Erfolg beschrieben. Bei der hier untersuchten Technik wird das Ligamentum patellofemorale mediale mit Hilfe einer autologen Sehnenplastik (Sehne des M. gracilis) und einer Weichteilfixation an der patellaren Insertion ohne Einbringung weiteren Fremdmaterials anatomisch rekonstruiert. Das Ziel dieser prospektiven Verlaufsbeobachtung war es, die postoperative Entwicklung von Funktion, Stabilit{\"a}t und Schmerzen, sowie die Beurteilung der Einschr{\"a}nkung des Gesamtgesundheitszustandes der Patienten nach MPFL-Rekonstruktion zu untersuchen. Dazu wurden 27 Patienten im Alter zwischen zw{\"o}lf und 45 Jahren, die zwischen Januar 2011 und November 2012 wegen habitueller bzw. habituell rezidivierender und in einem Fall traumatischer Patellaluxation operiert wurden, nach festgesetzten Kriterien in die Studie eingeschlossen und {\"u}ber den Zeitraum von zw{\"o}lf Monaten postoperativ nachuntersucht. Die Ergebnisse wurden anhand des „Kujala Anterior Knee Pain Score" und des „Validierten Fragebogen {\"u}ber Kniebeschwerden nach F. Flandry" erhoben. Außerdem wurde eine standardisierte k{\"o}rperliche Untersuchung durchgef{\"u}hrt. Von den 27 eingeschlossenen Patienten konnten 24 {\"u}ber die volle Dauer nachuntersucht werden, drei Patienten nur {\"u}ber sechs Monate postoperativ. Die Ergebnisse im Kujala- Score verbesserten sich von durchschnittlich 72 Punkten (IQR = 35) pr{\"a}operativ auf 95 Punkte (IQR = 9,25) nach zw{\"o}lf Monaten. Nach bereits sechs Monaten war die Verbesserung hochsignifikant. Die Ergebnisse des Flandry-Score zeigten eine Verbesserung von 65,7 Punkten (IQR = 29,5) pr{\"a}operativ auf 89,9 Punkte (IQR = 7,75) nach zw{\"o}lf Monaten. Auch hier war die Verbesserung bereits nach einem halben Jahr hochsignifikant. Postoperativ gaben die Patienten am h{\"a}ufigsten Schwierigkeiten bei der Hocke und beim Knien an. Weitere Einschr{\"a}nkungen der Alltagsaktivit{\"a}ten traten sechs Monate postoperativ nicht mehr auf. Auch die H{\"a}ufigkeit und Intensit{\"a}t der Schmerzen aufgrund des Kniegelenkes entwickelten sich nach Ablauf eines halben Jahres sehr gut. Probleme bei sportlichen Aktivit{\"a}ten wurden nach sechs Monaten nicht mehr angegeben, allerdings war bei 51,9\% der Patienten noch nach einem Jahr eine Atrophie der Quadrizepsmuskulatur festzustellen. Bereits nach drei Monaten wurde kein „Giving Way" mehr berichtet. Bei den 27 untersuchten Patienten trat insgesamt eine traumatische Reluxation auf. Weitere Komplikationen wurden nicht bekannt. Die subjektive Beurteilung des Gesamtgesundheitszustandes verbesserte sich bereits ein halbes Jahr nach der Operation hochsignifikant im Vergleich zum pr{\"a}operativen Status. Die MPFL-Rekonstruktion mit autologer Gracilissehne und Weichteilfixation zeigte bez{\"u}glich Reluxationen und Stabilit{\"a}t nach einem Jahr sehr gute Ergebnisse. Die Rehabilitation und Wiederaufnahme von sportlichen Aktivit{\"a}ten verlief z{\"u}gig. Die Resultate dieser Untersuchung sind vielversprechend, es wird jedoch noch Studien mit gr{\"o}ßeren Patientenzahlen und l{\"a}ngerem Nachuntersuchungszeitraum geben m{\"u}ssen.},
  subject      = {Patellaluxation},
  language  = {de}
}
@article{KonradsHobergRudert2015,
  author    = {Konrads, C. and Hoberg, M. and Rudert, M.},
  title     = {New Mechanism of Hip Endoprosthesis Damage Caused by High-frequency Electrocautery},
  series = {Journal of Medical Implants \& Surgery},
  volume    = {1},
  journal   = {Journal of Medical Implants \& Surgery},
  number    = {1},
  doi       = {10.4172/jmis.1000102},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-146528},
  pages     = {103},
  year      = {2015},
  abstract  = {No abstract available.},
  language  = {en}
}
@article{ThibaudeauTaubenbergerTheodoropoulosetal.2015,
  author    = {Thibaudeau, Laure and Taubenberger, Anna V. and Theodoropoulos, Christina and Holzapfel, Boris M. and Ramuz, Olivier and Straub, Melanie and Hutmacher, Dietmar W.},
  title     = {New mechanistic insights of integrin β1 in breast cancer bone colonization},
  series = {Oncotarget},
  volume    = {6},
  journal   = {Oncotarget},
  number    = {1},
  doi       = {10.18632/oncotarget.2788},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-175432},
  pages     = {332-344},
  year      = {2015},
  abstract  = {Bone metastasis is a frequent and life-threatening complication of breast cancer. The molecular mechanisms supporting the establishment of breast cancer cells in the skeleton are still not fully understood, which may be attributed to the lack of suitable models that interrogate interactions between human breast cancer cells and the bone microenvironment. Although it is well-known that integrins mediate adhesion of malignant cells to bone extracellular matrix, their role during bone colonization remains unclear. Here, the role of β1 integrins in bone colonization was investigated using tissue-engineered humanized in vitro and in vivo bone models. In vitro, bone-metastatic breast cancer cells with suppressed integrin β1 expression showed reduced attachment, spreading, and migration within human bone matrix compared to control cells. Cell proliferation in vitro was not affected by β1 integrin knockdown, yet tumor growth in vivo within humanized bone microenvironments was significantly inhibited upon β1 integrin suppression, as revealed by quantitative in/ex vivo fluorescence imaging and histological analysis. Tumor cells invaded bone marrow spaces in the humanized bone and formed osteolytic lesions; osteoclastic bone resorption was, however, not reduced by β1 integrin knockdown. Taken together, we demonstrate that β1 integrins have a pivotal role in bone colonization using unique tissue-engineered humanized bone models.},
  language  = {en}
}
@article{BoelchJansenMeffertetal.2015,
  author    = {Boelch, S. P. and Jansen, H. and Meffert, R. H. and Frey, S. P.},
  title     = {Six Sesamoid Bones on Both Feet: Report of a Rare Case},
  series = {Journal of Clinical and Diagnostic Research},
  volume    = {9},
  journal   = {Journal of Clinical and Diagnostic Research},
  number    = {8},
  doi       = {10.7860/JCDR/2015/12842.6394},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-126073},
  pages     = {RD04-RD05},
  year      = {2015},
  abstract  = {There is a variation of the total number of distinct bones in the human in the literature. This difference is mainly caused by the variable existence of sesamoid bones. Sesamoid bones at the first MTP are seen regularly. In contrast additional sesamoid bones at the divond to fifth MTP are rare. We report a case of additional sesamoid bones at every metatarsophalangeal joint (MTP) of both feet. A 22-year-old female Caucasian presented with weight-dependent pain of the divond MTP of the left foot. In the radiographs of both feet additional sesamoid bones at every MTP could be seen. This case reports a very rare variation in human anatomy. A similar case has not been displayed to the academic society and therefore should be acknowledged.},
  language  = {en}
}
@article{WehrleLiedertHeilmannetal.2015,
  author    = {Wehrle, Esther and Liedert, Astrid and Heilmann, Aline and Wehner, Tim and Bindl, Ronny and Fischer, Lena and Haffner-Luntzer, Melanie and Jakob, Franz and Schinke, Thorsten and Amling, Michael and Ignatius, Anita},
  title     = {The impact of low-magnitude high-frequency vibration on fracture healing is profoundly influenced by the oestrogen status in mice},
  series = {Disease Models \& Mechanisms},
  volume    = {8},
  journal   = {Disease Models \& Mechanisms},
  doi       = {10.1242/dmm.018622},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-144700},
  pages     = {93-104},
  year      = {2015},
  abstract  = {Fracture healing is impaired in aged and osteoporotic individuals. Because adequate mechanical stimuli are able to increase bone formation, one therapeutical approach to treat poorly healing fractures could be the application of whole-body vibration, including low-magnitude high-frequency vibration (LMHFV). We investigated the effects of LMHFV on fracture healing in aged osteoporotic mice. Female C57BL/6NCrl mice (n=96) were either ovariectomised (OVX) or sham operated (non-OVX) at age 41 weeks. When aged to 49 weeks, all mice received a femur osteotomy that was stabilised using an external fixator. The mice received whole-body vibrations (20 minutes/day) with 0.3 g peak-to-peak acceleration and a frequency of 45 Hz. After 10 and 21 days, the osteotomised femurs and intact bones (contra-lateral femurs, lumbar spine) were evaluated using bending-testing, micro-computed tomography (mu CT), histology and gene expression analyses. LMHFV disturbed fracture healing in aged non-OVX mice, with significantly reduced flexural rigidity (-81\%) and bone formation (-80\%) in the callus. Gene expression analyses demonstrated increased oestrogen receptor β (ERβ, encoded by Esr2) and Sost expression in the callus of the vibrated animals, but decreased β-catenin, suggesting that ERβ might mediate these negative effects through inhibition of osteoanabolic Wnt/β-catenin signalling. In contrast, in OVX mice, LMHFV significantly improved callus properties, with increased flexural rigidity (+ 1398\%) and bone formation (+637\%), which could be abolished by subcutaneous oestrogen application (0.025 mg oestrogen administered in a 90-day-release pellet). On a molecular level, we found an upregulation of ER alpha in the callus of the vibrated OVX mice, whereas ERβ was unaffected, indicating that ERa might mediate the osteoanabolic response. Our results indicate a major role for oestrogen in the mechanostimulation of fracture healing and imply that LMHFV might only be safe and effective in confined target populations.},
  language  = {en}
}
@article{WehrleLiedertHeilmannetal.2015,
  author    = {Wehrle, Esther and Liedert, Astrid and Heilmann, Aline and Wehner, Tim and Bindl, Ronny and Fischer, Lena and Haffner-Luntzer, Melanie and Jakob, Franz and Schinke, Thorsten and Amling, Michael and Ignatius, Anita},
  title     = {The impact of low-magnitude high-frequency vibration on fracture healing is profoundly influenced by the oestrogen status in mice},
  series = {Disease Models \& Mechanisms},
  volume    = {8},
  journal   = {Disease Models \& Mechanisms},
  doi       = {10.1242/dmm.018622},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-121109},
  pages     = {93-104},
  year      = {2015},
  abstract  = {Fracture healing is impaired in aged and osteoporotic individuals. Because adequate mechanical stimuli are able to increase bone formation, one therapeutical approach to treat poorly healing fractures could be the application of whole-body vibration, including low-magnitude high-frequency vibration (LMHFV). We investigated the effects of LMHFV on fracture healing in aged osteoporotic mice. Female C57BL/6NCrl mice (n=96) were either ovariectomised (OVX) or sham operated (non-OVX) at age 41 weeks. When aged to 49 weeks, all mice received a femur osteotomy that was stabilised using an external fixator. The mice received whole-body vibrations (20 minutes/day) with 0.3 G: peak-to-peak acceleration and a frequency of 45 Hz. After 10 and 21 days, the osteotomised femurs and intact bones (contra-lateral femurs, lumbar spine) were evaluated using bending-testing, micro-computed tomography (μCT), histology and gene expression analyses. LMHFV disturbed fracture healing in aged non-OVX mice, with significantly reduced flexural rigidity (-81\%) and bone formation (-80\%) in the callus. Gene expression analyses demonstrated increased oestrogen receptor β (ERβ, encoded by Esr2) and Sost expression in the callus of the vibrated animals, but decreased β-catenin, suggesting that ERβ might mediate these negative effects through inhibition of osteoanabolic Wnt/β-catenin signalling. In contrast, in OVX mice, LMHFV significantly improved callus properties, with increased flexural rigidity (+1398\%) and bone formation (+637\%), which could be abolished by subcutaneous oestrogen application (0.025 mg oestrogen administered in a 90-day-release pellet). On a molecular level, we found an upregulation of ERα in the callus of the vibrated OVX mice, whereas ERβ was unaffected, indicating that ERα might mediate the osteoanabolic response. Our results indicate a major role for oestrogen in the mechanostimulation of fracture healing and imply that LMHFV might only be safe and effective in confined target populations.},
  language  = {en}
}