A lexicon for wear of metal-on-metal hip prostheses
نویسندگان
چکیده
منابع مشابه
Influence of simulator kinematics on the wear of metal-on-metal hip prostheses.
There is now considerable interest in metal-on-metal bearings for hip prostheses. Extremely low wear rates (0.1 mm3/10(6) cycles) have been reported in some simulator studies, while in vivo studies, although still very low, have shown wear rates of the order of 1 mm3/10(6) cycles. The aim of this study was to compare wear rates of metal-on-metal bearings in two hip simulators with different kin...
متن کاملClinical and Wear Analyses of 9 Large Metal-on-Metal Total Hip Prostheses
BACKGROUND Metal-on-Metal (MoM) total hip arthroplasties (THA) are associated with pseudotumor formation and high revision rates. This prospective study analysed the clinical and wear analyses of 9 large Metal-on-Metal (MoM) total hip arthroplasties (THA) to understand the underlying mechanisms of failure. The MoM bearings were revised for multiple reasons; the main reason was pseudotumor forma...
متن کاملBioengineering reasons for the failure of metal-on-metal hip prostheses: an engineer's perspective.
Bioengineering reasons for increased wear and failure of metal-on-metal (MoM) bearings in hip prostheses have been described. Low wear occurs in MoM hips when the centre of the femoral head is concentric with the centre of the acetabular component and the implants are correctly positioned. Translational or rotational malpositioning of the components can lead to the contact-patch of the femoral ...
متن کاملCatastrophic wear in a metal-on-ceramic total hip arthroplasty.
A 51-year-old woman came to our clinic 6 months after a right total hip arthroplasty. She had noticed a slowly growing mass in the proximal thigh and referred progressive pain in the right groin. Plain radiography revealed premature acetabular cup aseptic loosening, and in the computed tomography study, a 14-cm-diameter mass was observed. Revision surgery was performed, showing a metal-on-ceram...
متن کاملMethod for the location of primary wear scars from retrieved metal on metal hip replacements
BACKGROUND Retrieved metal-on-metal acetabular cups are valuable resources in investigating the wear behaviour of failed hip implants, but adequate methods to do so are lacking. To further contribute to addressing this issue, we developed a method to detect the in vivo location of the primary wear scar of an explanted cup. METHODS We proposed a new method in which thirteen patients with faile...
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ژورنال
عنوان ژورنال: Journal of Orthopaedic Research
سال: 2014
ISSN: 0736-0266
DOI: 10.1002/jor.22651