TY  - JOUR
A1  - Zhao, De-Wei
A1  - Yu, Mang
A1  - Hu, Kai
A1  - Wang, Wei
A1  - Yang, Lei
A1  - Wang, Ben-Jie
A1  - Gao, Xiao-Hong
A1  - Guo, Yong-Ming
A1  - Xu, Yong-Qing
A1  - Wei, Yu-Shan
A1  - Tian, Si-Miao
A1  - Yang, Fan
A1  - Wang, Nan
A1  - Huang, Shi-Bo
A1  - Xie, Hui
A1  - Wei, Xiao-Wei
A1  - Jiang, Hai-Shen
A1  - Zang, Yu-Qiang
A1  - Ai, Jun
A1  - Chen, Yuan-Liang
A1  - Lei, Guang-Hua
A1  - Li, Yu-Jin
A1  - Tian, Geng
A1  - Li, Zong-Sheng
A1  - Cao, Yong
A1  - Ma, Li
T1  - Prevalence of Nontraumatic Osteonecrosis of the Femoral Head and its Associated Risk Factors in the Chinese Population: Results from a Nationally Representative Survey
JF  - Chinese Medical Journal
N2  - Background: Nontraumatic osteonecrosis of the femoral head (NONFH) is a debilitating disease that represents a significant financial burden for both individuals and healthcare systems. Despite its significance, however, its prevalence in the Chinese general population remains unknown. This study aimed to investigate the prevalence of NONFH and its associated risk factors in the Chinese population. 
Methods: A nationally representative survey of 30,030 respondents was undertaken from June 2012 to August 2013. All participants underwent a questionnaire investigation, physical examination of hip, and bilateral hip joint X-ray and/or magnetic resonance imaging examination. Blood samples were taken after overnight fasting to test serum total cholesterol, triglyceride, and high-density lipoprotein (HDL) and low-density lipoprotein (LDL) levels. We then used multivariate logistic regression analysis to investigate the associations between various metabolic, demographic, and lifestyle-related variables and NONFH. 
Results: NONFH was diagnosed in 218 subjects (0.725%) and the estimated NONFH cases were 8.12 million among Chinese people aged 15 years and over. The prevalence of NONFH was significantly higher in males than in females (1.02% vs. 0.51%, \(\chi^2\) = 24.997, P < 0.001). Among NONFH patients, North residents were subjected to higher prevalence of NONFH than that of South residents (0.85% vs. 0.61%, \(\chi^2\) = 5.847, P = 0.016). Our multivariate regression analysis showed that high blood levels of triglycerides, total cholesterol, LDL-cholesterol, and non-HDL-cholesterol, male, urban residence, family history of osteonecrosis of the femoral head, heavy smoking, alcohol abuse and glucocorticoid intake, overweight, and obesity were all significantly associated with an increased risk of NONFH. 
Conclusions: Our findings highlight that NONFH is a significant public health challenge in China and underscore the need for policy measures on the national level. Furthermore, NONFH shares a number of risk factors with atherosclerosis.
KW  - nontraumatic osteonecrosis of the femoral head
KW  - risk factors
KW  - idiopathic osteonecrosis
KW  - early-stage osteonecrosis
KW  - implantation
KW  - bone
KW  - marrow
KW  - follow-up
KW  - intake
KW  - avascular necrosis
KW  - occupational-status
KW  - cigarette smoking
KW  - alcohol
KW  - prevalence
Y1  - 2015
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-138482
VL  - 128
IS  - 21
ER  - 
TY  - JOUR
A1  - Fuchs, Andreas
A1  - Kreczy, Dorothea
A1  - Brückner, Theresa
A1  - Gbureck, Uwe
A1  - Stahlhut, Philipp
A1  - Bengel, Melanie
A1  - Hoess, Andreas
A1  - Nies, Berthold
A1  - Bator, Julia
A1  - Klammert, Uwe
A1  - Linz, Christian
A1  - Ewald, Andrea
T1  - Bone regeneration capacity of newly developed spherical magnesium phosphate cement granules
JF  - Clinical Oral Investigations
N2  - Objectives
Magnesium phosphate-based cements begin to catch more attention as bone substitute materials and especially as alternatives for the more commonly used calcium phosphates. In bone substitutes for augmentation purposes, atraumatic materials with good biocompatibility and resorbability are favorable. In the current study, we describe the in vivo testing of novel bone augmentation materials in form of spherical granules based on a calcium-doped magnesium phosphate (CaMgP) cement.
Materials and Methods
Granules with diameters between 500 and 710 μm were fabricated via the emulsification of CaMgP cement pastes in a lipophilic liquid. As basic material, two different CaMgP formulations were used. The obtained granules were implanted into drill hole defects at the distal femoral condyle of 27 New Zealand white rabbits for 6 and 12 weeks. After explantation, the femora were examined via X-ray diffraction analysis, histological staining, radiological examination, and EDX measurement.
Results
Both granule types display excellent biocompatibility without any signs of inflammation and allow for proper bone healing without the interposition of connective tissue. CaMgP granules show a fast and continuous degradation and enable fully adequate bone regeneration.
Conclusions
Due to their biocompatibility, their degradation behavior, and their completely spherical morphology, these CaMgP granules present a promising bone substitute material for bone augmentation procedures, especially in sensitive areas.
Clinical Relevance
The mostly insufficient local bone supply after tooth extractions complicates prosthetic dental restoration or makes it even impossible. Therefore, bone augmentation procedures are oftentimes inevitable. Spherical CaMgP granules may represent a valuable bone replacement material in many situations.
KW  - implantation
KW  - calcium-magnesium phosphate cement
KW  - cement pastes
KW  - prefabricated granules
KW  - bone replacement material
Y1  - 2022
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-268872
SN  - 1436-3771
VL  - 26
IS  - 3
ER  -