Advertisement for orthosearch.org.uk
Results 1 - 1 of 1
Results per page:
Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_IX | Pages 32 - 32
1 Mar 2012
Kendrick B Simpson D Bottomley N Kaptein B Garling E Gill H Dodd C Murray D Price A
Full Access

Purpose of study

To investigate the linear penetration rate of the polyethylene bearing in unicompartmental knee arthroplasty at twenty years.

Introduction

The Phase 1 Oxford medial UKR was introduced in 1978 as a design against wear, with a fully congruous articulation. In 1987 the Phase 2 implant was introduced with new instrumentation and changes to the bearing shape. We have previously shown a linear penetration rate (LPR) of 0.02 mm/year at ten years in Phase 2, but that higher penetration rates can be seen with impingement. The aim of this study was to determine the 20 year in-vivo LPR of the Oxford UKR, using Roentgen Stereophotogrammetric Analysis (RSA).