Results 71 to 80 of about 1,875,362 (314)

Transient elastohydrodynamic lubrication analysis of a novel metal-on-metal hip prosthesis with a non-spherical femoral bearing surface

, 2011
Effective lubrication performance of metal-on-metal hip implants only requires optimum conformity within the main loaded area, while it is advantageous to increase the clearance in the equatorial region.
Anissian H.L., Bergmann G., Calonius O., Catelas I., Dobbs H.S., Dowson D., Firkins P.J., Gao LM, Grubl A., Hu X.Q., Jacobs J.J., Lee R., Liu F., Meng Q.E., Meng QE, Rieker C., Skipor A.K., Tuke M.A., Venner C.H., Wang F.C., Yao J.Q.   +20 more
core   +1 more source

Measurement of the Femoral Head Diameter at Hemiarthroplasty of the Hip [PDF]

, 2014
This paper is focusing on the measurement methods of the femoral head at the hip hemiarthroplasty surgery. The measurement result of 10 femoral head specimens using four different methods of Vernier calliper, ring gauge, CT scan and X-ray were compared ...
Athapattu, Meuru, Chizari, Mahmoud, Kazemi, Seyyed Morteza, Saveh, Amir Hossein, Wang, Bin   +4 more
core   +1 more source

Analysis of early stage osteonecrosis of the human femoral head and the mechanism of femoral head collapse

International Journal on Biological Sciences, 2018
We explored the mechanism of early stage osteonecrotic femoral head collapse by analyzing and comparing different regions in human osteonecrotic femoral head samples.
Cheng Wang, H. Meng, Yu Wang, Bin Zhao, Chenyang Zhao, Weijia Sun, Yun Zhu, Bingxing Han, Xue-ling Yuan, R. Liu, Xin Wang, Ai-yuan Wang, Q. Guo, Jiang Peng, Shibi Lu   +14 more
semanticscholar   +1 more source

Do ceramic femoral heads reduce taper fretting corrosion in hip arthroplasty? A retrieval study. [PDF]

, 2013
BACKGROUND: Previous studies regarding modular head-neck taper corrosion were largely based on cobalt chrome (CoCr) alloy femoral heads. Less is known about head-neck taper corrosion with ceramic femoral heads.
Gilbert, Jeremy L, Hanzlik, Josa A, Klein, Gregg R, Kocagöz, Sevi B, Kraay, Matthew J, Kurtz, Steven M, Lee, Gwo-Chin, MacDonald, Daniel W, Mont, Michael A, Parvizi, Javad, Rimnac, Clare M, Underwood, Richard J   +11 more
core   +2 more sources

Percolative Mechanism of Aging in Zirconia-Containing Ceramics for Medical Applications [PDF]

Advanced Materials, Volume 15, Issue 6, March, 2003, Pages 507-511, 2018
Recently, several episodes of fracture of zirconia ceramic femoral heads of total hip prostheses have alarmed the medical and scientific community regarding aging problems in zirconia prostheses. Such fractures cause immediate local tissue reactions, which require urgent medical intervention to prevent further complications.
arxiv   +1 more source

Which Osteotomy for Osteonecrosis of the Femoral Head and Which Patient for the Osteotomy? [PDF]

, 2019
Transtrochanteric curved varus osteotomy (TCVO) and transtrochanteric rotational osteotomy (TRO) are joint-preserving procedures for osteonecrosis of the femoral head.
Ha, Yong-Chan, Koo, Kyung-Hoi, Lee, Beomseok, Lee, Young-Kyun, Parvizi, Javad   +4 more
core   +1 more source

Apoptosis in the Osteonecrosis of the Femoral Head

Clinics in Orthopedic Surgery, 2010
Osteonecrosis of the femoral head is classified into idiopathic and secondary forms. A number of etiological factors in the development of osteonecrosis have been suggested but the biological mechanisms are still unclear. Recently, some reports suggested that the apoptosis is closely related to osteonecrosis of the femoral head.
Soo Ho Lee, Soo-Youn Lee, Yoon-Seok Youm
openaire   +2 more sources

Research progress in the pathogenesis of hormone-induced femoral head necrosis based on microvessels: a systematic review

Journal of Orthopaedic Surgery and Research
Hormonal necrosis of the femoral head is caused by long-term use of glucocorticoids and other causes of abnormal bone metabolism, lipid metabolism imbalance and blood microcirculation disorders in the femoral head, resulting in bone trabecular fracture ...
Tiancheng Ma, Yan Wang, Jianxiong Ma, Hongwei Cui, Xiaotian Feng, Xinlong Ma   +5 more
doaj   +1 more source

Cost Comparison of Femoral Head Banking versus Bone Substitutes

Journal of Orthopaedic Surgery, 2010
Purpose. To compare the costs of femoral head banking versus bone substitutes. Methods. Records of femoral head banking from 1998 to 2008 were reviewed.
Hon-Bong Leung, Margaret Woon-Man Fok, Lorraine Chi-Yan Chow, Chi-Hung Yen   +3 more
doaj   +1 more source

Case report: Directional infusion of peripheral blood stem cells into the necrotic zone in femoral heads through the medial circumflex femoral artery: A tracing study

Frontiers in Medicine, 2022
ObjectiveThis study aimed to explore whether peripheral blood stem cells (PBSCs) infused through the medial circumflex femoral artery to treat osteonecrosis of the femoral head (ONFH) could migrate into the necrotic area of femoral head.MethodsWe ...
Qiang Mao, Weijie Shao, Shuaijie Lv, Peijian Tong, Bangjian He   +4 more
doaj   +1 more source