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Comparative Study
Three metal-on-metal hip replacement devices from the same manufacturer--a short- to mid-term survival.
- Inari Kostensalo, Mika Junnila, Jari Mokka, Petri Virolainen, Tero Vahlberg, and Keijo T Mäkelä.
- Acta Orthop Belg. 2014 Jun 1; 80 (2): 222-7.
AbstractThe aim of this retrospective study was to evaluate short- to mid-term results of three different metal-on-metal 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--Birmingham 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.
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