A Survey on the Prevalence of Pseudotumors with Metal-on-Metal Hip Resurfacing in Canadian Academic Centers

被引:41
作者
Beaule, Paul E. [1 ]
Kim, Paul R.
Powell, James [2 ]
Mackenzie, James [2 ]
Werle, Jason [2 ]
Antoniou, John [3 ]
Huk, Olga [3 ]
Vendittoli, Pascal-Andre [4 ]
Lavigne, Martin [4 ]
Smith, Frank [5 ]
Naudie, Doug [6 ]
McCalden, Richard [6 ]
Bourne, Robert [6 ]
Schemitsch, Emil [7 ]
Garbuz, Donald [8 ]
Greidanus, Nelson [8 ]
Duncan, Clive [8 ]
Belzile, Etienne [9 ]
机构
[1] Univ Ottawa, Div Orthopaed Surg, Ottawa, ON K1H 8L6, Canada
[2] Univ Calgary, Calgary, AB, Canada
[3] McGill Univ, Montreal, PQ, Canada
[4] Hop Maison Neuve Rosemont, Montreal, PQ, Canada
[5] McMaster Univ, Hamilton, ON, Canada
[6] London Hlth Sci Ctr, London, ON, Canada
[7] St Michaels Hosp, Toronto, ON M5B 1W8, Canada
[8] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada
[9] Univ Laval, Quebec City, PQ, Canada
关键词
ARTHROPLASTY; BEARINGS; AGE;
D O I
10.2106/JBJS.J.01848
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
摘要
Background: Metal-on-metal bearings for hip arthroplasty have been in clinical use for over twenty years with excellent clinical results reported worldwide. A small percentage (< 1%) of patients have developed an inflammatory response, and a more severe inflammatory response termed pseudotumor has been more recently reported. The primary purpose of this study was to determine the prevalence of pseudotumor following metal-on-metal hip resurfacing in Canadian academic centers. Methods: Nine of the fourteen centers that perform metal-on-metal hip resurfacings were surveyed. The number of metal-on-metal hip resurfacing arthroplasties performed at each center was determined, as was the number of patients who presented with a pseudotumor and subsequently required revision hip surgery between 2002 and December 2008. Results: At the nine centers, 3432 hip resurfacing arthroplasties were performed; 76.9% of the patients were male, the mean age was 51.2 years (range, sixteen to eighty-three years), and the mean body-mass index was 28.1 (range, 17 to 55). The mean length of follow-up was 3.4 years (range, two to nine years). A pseudotumor developed after four of the 3432 arthroplasties, for a prevalence of 0.10%. Conclusions: Although pseudotumors remain a concern after metal-on-metal hip resurfacing, the prevalence at short to midterm follow-up is very low in this multicenter survey. Continued close monitoring is required to determine what clinical factors are involved with the uncommon pseudotumor formation.
引用
收藏
页码:118 / 121
页数:4
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