Open AccessManagement of failed metal-on-metal total hip arthroplasty
Author(s) -
Justin W. Griffin,
Michele R. D’Apuzzo,
James A. Browne
Publication year - 2012
Publication title -
world journal of orthopedics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 43
ISSN - 2218-5836
DOI - 10.5312/wjo.v3.i6.70
Subject(s) - medicine , total hip arthroplasty , joint arthroplasty , hip arthroplasty , arthroplasty , adverse effect , surgery
The theoretical advantages of metal-on-metal (MOM) bearing couples in total hip arthroplasty (THA) have been recently balanced by concerns regarding adverse local and systemic effects. Higher than anticipated early revision rates have been reported by several joint registries. Failed MOM hips present with a spectrum of symptoms and findings and traditional methods of failure must be considered in addition to the failure modes that appear to be unique to the MOM bearing couple. Metal hypersensitivity and soft tissue immune reactions remain incompletely understood and require careful ongoing study. The tools available to evaluate MOM THAs and the indications for revision surgery remain to be defined. Outcomes following revision of MOM hips appear to depend on appropriate evaluation, early identification, and appropriate surgical management.