A Prospective Metal Ion Study of Large-Head Metal-on-Metal Bearing: A Matched-Pair Analysis of Hip Resurfacing Versus Total Hip Replacement

被引:49
作者
Beaule, Paul E. [1 ]
Kim, Paul R. [1 ]
Hamdi, Amre [1 ]
Fazekas, Anna [1 ]
机构
[1] Univ Ottawa, Ottawa Hosp, Ottawa, ON K1H 8L6, Canada
关键词
Metal on metal; Ion levels; Differential hardness bearing; Big femoral head; Total hip replacement;
D O I
10.1016/j.ocl.2011.01.005
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
100224 [整形外科学];
摘要
A Prospective Metal Ion Study of Large-Head Metal-on-Metal Bearing: A Matched-Pair Analysis of Hip Resurfacing Versus Total Hip Replacement Paul E. Beau le, Paul R. Kim, Amre Hamdi, and Anna Fazekas The current study measured ion release among large-head metal-on-metal hip bearings. Twenty-six patients with a modular, Profemur(R) TL with A-Class(R) big femoral head total hip replacement were matched (gender, femoral size, BMI) with a group of 26 patients with the Conserve(R) Plus implant hip resurfacing. Compared with HR patients, THR patients had higher median serum cobalt ion levels at 6 months (3.26 vs 1.12 mu g/L, P = .002) 1 year (4.51 vs 1.02, P = .002), and 2 years (3.77 vs 1.22, P<.001) following surgery. No differences in chromium ions were observed. Further research is required to determine the clinical significance of elevated serum cobalt ions.
引用
收藏
页码:251 / +
页数:8
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