Polyethylene wear of mobile-bearing unicompartmental knee replacement at 20 years.

Journal article

The Oxford unicompartmental knee replacement (UKR) was designed to minimise wear utilising a fully-congruent, mobile, polyethylene bearing. Wear of polyethylene is a significant cause of revision surgery in UKR in the first decade, and the incidence increases in the second decade. Our study used model-based radiostereometric analysis to measure the combined wear of the upper and lower bearing surfaces in 13 medial-compartment Oxford UKRs at a mean of 20.9 years (17.2 to 25.9) post-operatively...

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Authors: Kendrick, B; Simpson, D; Kaptein, B; Valstar, E; Gill, H

• Publication status: Published
• Journal: Journal of bone and joint surgery. British volume
• Volume: 93
• Issue: 4
• Pages: 470-475
• Publication date: 2011-04-01
• DOI: 10.1302/0301-620x.93b4.25605
• ISSN: 0301-620X
• Language: English
• Keywords: Equipment Failure Analysis; Knee Prosthesis; Materials Testing; Prosthesis Failure; Osteoarthritis, Knee; Prosthesis Design; Body Mass Index; Polyethylene; Reoperation; Humans; Aged; Middle Aged; Time Factors; Arthroplasty, Replacement, Knee; Male; Weight-Bearing; Female