An investigation into the 10-year outcomes of revision total hip arthroplasty: a single centre study of 758 patients

With the incidence of primary total hip arthroplasty (THA) expected to increase over the coming years, the volume of revisions & re-revisions is subsequently predicted to rise. While revision THAs have proven to be clinically effective and achieve high patient satisfaction, the procedure is technically more difficult and is associated with a higher complication rate. The aim of this retrospective cohort study is to evaluate the implant survivorship and Patient Related Outcome Measures (PROMS) in revision THAs over a 10-year period. Institutional ethical approval was obtained prior to the review of all revision THAs performed in a single tertiary orthopaedic institution between 2005 and 2011. A final cohort of 758 patients was noted, with an equal number of males and females and an average age of 65.52 +/- 12.5 years. Aseptic loosening was the main indication for undergoing both index revision (40%) or re-revision (34%) surgery. Implant survival rate for revision THAs at 10 years was 0.85 (CI: 0.79-0.89). At 5 years, the mean SF-36 score was 65.7 +/- 18.7 (19.8-98.13) [P value 0.0001], with the mean WOMAC score noted as 29.9 +/- 20.5 (0 - 96) [P value 0.0001] at 10 years in 349 patients. Our study highlights the efficiency of revision hip surgery by demonstrating strong implant survival over a long follow up period. The maintenance of PROMs at 5 and 10 years was also favourable. The importance of a National Joint Registry was noted after numerous gaps within a historical database was revealed.