Abstract

The aim of this retrospective study was to evaluate short- to midterm results of three different metal-onmetal hip devices from the same manufacturer. A total of 329 hip operations were performed in a single academic unit between 2004 and 2010 using either Birmingham hip resurfacing or Synergy – Birming - ham and Synergy – R3 total hip arthroplasty. The overall survival rate at the end of the follow-up time for Birmingham hip resurfacing was 88%, for Synergy – Birmingham total hip arthroplasty 95%, and for Synergy – R3 total hip arthroplasty 81% (p = 0.036). Five revision operations were performed due to adverse reaction to metal debris. Head sizes > 50 mm had lower revision rates compared to smaller ones. Synergy – R3 had a poor survival already at short term. The mid-term survival of Birmingham hip resurfacing arthroplasty was inferior compared to previous studies.