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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXI | Pages 12 - 12
1 May 2012
J. M K. A P. D J.G. H
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Introduction

Although hip arthroplasty has been very successful in relieving pain and optimising function, problems have arisen with wear and osteolysis. Highly cross linked polyethylene has been developed to address this problem. The aim of this study was to compare the in vivo wear of standard versus highly cross linked polyethylene (HXLP) in primary total hip arthroplasty at 5-year follow up.

Methods

Approval was obtained through the Regional Ethics Committee before commencement of the study. 122 patients were enrolled in a prospective, double blinded, randomised trial and followed annually to assess their progress. Annual radiographs were analysed using previously validated edge detection software to assess for 2 dimensional, 3 dimensional and volumetric wear. To reduce the disproportionate effects of bedding in and creep, the initial x-ray used was that taken at 6 months following surgery.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXI | Pages 110 - 110
1 May 2012
R. BB K. C K. A K. DJC C. HR A. L
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Aim

The purpose of this study was to perform a randomised controlled trial (RCT) to compare the >20 year outcomes of cemented versus cementless Mallory Head total hip replacements (THRs).

Methods

Two hundred and fifty patients with unilateral osteoarthritis of their hip, a mean age of 64 years and 48% of whom were female were randomised to receive either a cemented (n=124) or cementless (n=126) THR.