Three metal-on-metal hip replacement devices from the same manufacturer – A short- to midterm survival.


Published online: Jun 30 2014

Inari KOSTENSALO, Mika JUNNILA, Jari MOKKA, Petri VIROLAINEN, Tero VAHLBERG, Keijo T. MÄKELÄ

From Turku University Hospital, Turku, Finland

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.