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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXIX | Pages 2 - 2
1 Sep 2012
Higgins J Pearce A Price M Conn K Stranks G Britton J
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Introduction

Large head total hip arthroplasty (THA) reduces dislocation rates and provides a theooretically larger range of motion. We hypothesised that this would translate into greater improvement in functional scores when compared to 28mm metal-on-polyethylene THA at 5 years. We believe ours to be the first in vivo comparison study.

Methods

A multi-surgeon case-control study in a District General Hospital. The study group consisted of 427 patients with 452 hips, the 38mm uncemented metal-on-metal articulation THA (M2A/Bi-metric, Biomet UK). The control group consisted of 438 age and sex-matched patients with 460 28mm metal-on-polyethylene articulation THA (Exeter/Exeter or Exeter/Duraloc - Stryker UK. All patients were assessed in a physiotherapist led Joint Review Service as part of their standard follow up, with functional scoring using Oxford Hip (scored 0–48) and WOMAC scores (0–100).