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Orthopaedic Proceedings
Vol. 99-B, Issue SUPP_5 | Pages 95 - 95
1 Mar 2017
Prudhon J Desmarchelier R Hamadouche M Delaunay C
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Introduction

The causes for revision of primary total hip arthroplasty (THA) are various and quite well known. The developing use of dual-mobility THA (DM-THA) seems a relevant option to decrease the risk of instability. Due to lack of long-term follow-up, this innovative retentive concept is suspected to increase the risk of polyethylene (PE) wear. The aim of the study was to analyse the causes for DM-THA revision and assess whether or not its occurrence is different from that of fixed-standard (FS) THA, particularly for aseptic loosening or wear and/or osteolysis.

Materials and methods

The SoFCOT group conducted an observational prospective multicentre study from 1 January

2010 to 31 December 2011. Inclusion criteria comprised an exhaustive collection of 2044 first-revision THAs with 251 DM-THAs and 1793 FS-THAs. After excluding complications linked to patient factors (infection and periprosthetic fractures), we performed a matched case–control study (matching ratio 1:1) comparing two groups of 133 THAs.