[Dissociation of the acetabular metallic inlay of a metal-on-metal total hip arthroplasty].
Total hip arthroplasty was performed in November 2001 in a 30-year-old active patient with degenerative hip disease. A metal-on-metal bearing was used. Follow-up was considered excellent until the development of pain and squeaking at hip mobilization, leading to revision in March 2006. The acetabular metallic inlay of the metal-on-metal insert was found detached from the polyethylene insert; half of the diameter of the neck of the femoral stem was sectioned. Complete revision was performed with an acetabular graft. At one year follow-up, anatomic and functional outcome has been excellent. To our knowledge, this is the first report of this kind of mechanical failure of a metal-on-metal total hip arthroplasty.
Service de Chirurgie Orthopédique des Membres, Institut Calot, Berck-Sur-Mer, France. cazenaveal@wanadoo.fr
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Cazenave
D000077:Acetabulum; D000328:Adult; D019644:Arthroplasty, Replacement, Hip; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation