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Hip Int. 2014 Sep-Oct;24(5):442-7. doi: 10.5301/hipint.5000150. Epub 2014 Jul 31.

High failure rate of the R3 metal-on-metal total hip arthroplasty.

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Hip Unit, Department of Trauma and Orthopaedics, University Hospital of Wales, Cardiff - UK.


We report our failures with the use of the R3 metal-on-metal bearing. Forty six patients had an R3 acetabular system metal-on-metal THR in our centre between March 2007 and March 2009. All operations were performed using femoral components and appropriately matched femoral heads manufactured by Smith and Nephew. Twelve patients underwent revision surgery for adverse reaction to metal debris (ARMD). The median acetabular inclination was 40 degrees (range 21.1-49.1) and the median acetabular anteversion was 7.5 degrees (range 3.3-10.4). The median serum Cobalt was 9.9 µg/L (range 3.1-45) and the median serum Chromium was 5.8 µg/L (range 1.8-19.3). The time to revision was 39.2 months (range 13-53). Our current failure rate is 24%.

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