Sharkey Peter F, Lichstein Paul M, Shen Chao, Tokarski Anthony T, Parvizi Javad
The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania.
The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania.
J Arthroplasty. 2014 Sep;29(9):1774-8. doi: 10.1016/j.arth.2013.07.024. Epub 2014 Jul 5.
The purpose of this study was to determine the frequency and cause of failure after total knee arthroplasty and compare the results with those reported by our similar investigation conducted 10 years ago. A total of 781 revision TKAs performed at our institution over the past 10 years were identified. The most common failure mechanisms were: loosening (39.9%), infection (27.4%), instability (7.5%), periprosthetic fracture (4.7%), and arthrofibrosis (4.5%). Infection was the most common failure mechanism for early revision (<2 years from primary) and aseptic loosening was the most common reason for late revision. Polyethylene (PE) wear was no longer the major cause of failure. Compared to our previous report, the percentage of revisions performed for polyethylene wear, instability, arthrofibrosis, malalignment and extensor mechanism deficiency has decreased.
本研究的目的是确定全膝关节置换术后失败的频率和原因，并将结果与我们10年前进行的类似调查所报告的结果进行比较。我们确定了过去10年在本机构进行的781例翻修全膝关节置换术。最常见的失败机制为：松动（39.9%）、感染（27.4%）、不稳定（7.5%）、假体周围骨折（4.7%）和关节纤维化（4.5%）。感染是早期翻修（初次手术后<2年）最常见的失败机制，无菌性松动是晚期翻修最常见的原因。聚乙烯（PE）磨损不再是主要的失败原因。与我们之前的报告相比，因聚乙烯磨损、不稳定、关节纤维化、对线不良和伸肌机制缺陷而进行翻修的百分比有所下降。
