J Bone Joint Surg Br. 1992 Mar;74(2):228-32.

Polyethylene wear in meniscal knee replacement. A one to nine-year retrieval analysis of the Oxford knee.

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Department of Engineering Science, University of Oxford, England.

Abstract

We recovered 23 meniscal bearings from 18 failed bicompartmental Oxford knee prostheses. They had been implanted for one to nine years. The minimum thickness of the retrieved bearings was measured and compared with the thickness of 25 unused bearings. The mean penetration rate, calculated by two methods, was either 0.043 or 0.026 mm per annum. This compares with 0.19 mm per annum reported for the Charnley hip. The use of a fully congruous meniscal bearing prosthesis can reduce wear in knee arthroplasty to a very low rate.

PMID:: 1544958; [PubMed - indexed for MEDLINE]

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