Medium term review of the ASR implant system: A single surgeon series.

INTRODUCTION: Both ASR hip resurfacings and stemmed ASR XL arthroplasties have failed at high rates in several published series. We assessed a single surgeon series of these arthroplasties looking to identify factors associated with their failure.

METHODS: All surgeries were performed by one surgeon. Patients were evaluated clinically, radiologically and with serial cobalt and chromium ion analysis.

RESULTS: 274 implants were analysed - 152 ASR resurfacings and 122 ASR XL implants. Thirty revisions were performed.

CONCLUSION: The failure rate of the ASR implant in our series is unacceptably high - its use in routine hip arthroplasty cannot be supported.