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We report the early failure of five ceramic-on-ceramic hip resurfacings (CoCHRs). The ceramic used for the acetabular liner was a novel ceramic-composite (two thirds polyurethane and one third alumina ceramic). All cases were revised for increasing metal ion levels (blood cobalt 3.93-208.0 μg/l and chromium 1.57-17.5 μg/l) due to ceramic liner fracture and/or accelerated wear of the ceramic femoral head coating. Patients underwent bearing exchange and revision using primary hip arthroplasty implants at a mean of 3.0 years following CoCHR. Intraoperatively all patients had metallosis. At 1 to 2 years of follow-up blood metal ions normalized with no complications. We do not recommend this particular type of ceramic-on-ceramic bearing for hip resurfacing.

Original publication

DOI

10.1016/j.arth.2014.10.019

Type

Journal article

Journal

J Arthroplasty

Publication Date

03/2015

Volume

30

Pages

416 - 418

Keywords

ceramic-on-ceramic, fracture, hip resurfacing, metal ions, revision arthroplasty, Adult, Aluminum Oxide, Arthroplasty, Replacement, Hip, Biocompatible Materials, Ceramics, Chromium, Cobalt, Corrosion, Female, Hip Prosthesis, Humans, Metals, Heavy, Middle Aged, Poisoning, Prosthesis Failure