Early failure of unicompartmental knee arthroplasty leading to revision

被引:139
作者
Aleto, Thomas J. [1 ,2 ]
Berend, Michael E. [1 ]
Ritter, Merrill A. [1 ]
Faris, Philip M. [1 ]
Meneghini, R. Michael [1 ]
机构
[1] St Francis Hosp, Joint Replacement Surg Indiana Res Fdn, Ctr Hip & Knee Surg, Mooresville, IN 46158 USA
[2] Univ Missouri, Missouri Hip & Knee Ctr, Dept Orthopaed, Columbia, MO USA
关键词
unicompartmental knee arthroplasty; revision knee arthroplasty; tibial collapse;
D O I
10.1016/j.arth.2007.03.020
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
The most common previously reported modes of failure of unicompartmental knee arthroplasty (UKA) in the first and second decades are polyethylene wear, progression of arthritis, and component loosening. The purpose of this study is to describe an early mechanism of failure of the medial UKA. Thirty-two consecutive revisions from UKA to total knee arthroplasty were retrospectively reviewed. The predominant mode of failure observed in 15 (47%) of 32 knees was medial tibial collapse. Of these, 87% were an all-polyethylene design, and 7 of 15 failed in less than 16 months and required more complex reconstruction with steins, augments, and screws and cement. Increased tibial slope was associated with posterior tibial collapse. In our series, knees that failed by medial tibial collapse had more significant bone defects and required more complex reconstructions than is currently reported in the literature.
引用
收藏
页码:159 / 163
页数:5
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