Open AccessModern Metal-on-Metal Hip Implants
Author(s) -
Kevin J. Bozic,
James A. Browne,
Chris J. Dangles,
Paul Manner,
Adolph J. Yates,
Kristy Weber,
Kevin Boyer,
Paul Zemaitis,
Anne Woznica,
Charles M. Turkelson,
Janet L. Wies
Publication year - 2012
Publication title -
journal of the american academy of orthopaedic surgeons
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.343
H-Index - 111
eISSN - 1095-8762
pISSN - 1067-151X
DOI - 10.5435/jaaos-20-06-402
Subject(s) - medicine , hip resurfacing , hip arthroplasty , total hip arthroplasty , femoral head , joint arthroplasty , arthroplasty , surgery
This Technology Overview was prepared using systematic review methodology and summarizes the findings of studies published as of July 15, 2011, on modern metal-on-metal hip implants. Analyses conducted on outcomes by two joint registries indicate that patients who receive metal-on-metal total hip arthroplasty (THA) and hip resurfacing are at greater risk for revision than are patients who receive THA using a different bearing surface combination. Data from these registries also indicate that larger femoral head components have higher revision rates and risk of revision and that older age is associated with increased revision risks of large-head metal-on-metal THA. Several studies noted a correlation between suboptimal hip implant positioning and higher wear rates, local metal debris release, and consequent local tissue reactions to metal debris. In addition, several studies reported elevated serum metal ion concentrations in patients with metal-on-metal hip articulations, although the clinical significance of these elevated ion concentrations remains unknown.