Bal B Sonny, Greenberg David, Li Stephen, R Mauerhan David, Schultz Loren, Cherry Kenneth
Department of Orthopaedic Surgery, University of Missouri-Columbia, Missouri 65212, USA.
J Arthroplasty. 2008 Aug;23(5):650-5. doi: 10.1016/j.arth.2007.08.002. Epub 2007 Nov 9.
In posterior-stabilized total knee arthroplasties, a femoral cam and polyethylene tibial post are commonly used to restore posterior stability after sacrifice of the posterior cruciate ligament. This article reports a high incidence of early tibial post failures in one design of prosthesis and examines the variables that may have contributed to such. Five hundred sixty-four consecutive posterior-stabilized total knees were implanted in 512 patients, using a total knee prosthesis with a polyethylene tibial post and femoral cam. Clinical and radiographic outcomes were measured at a mean follow-up of 40 months after surgery (range, 24-83 months). At follow-up, 70 knees in 62 patients (12%) had undergone revision surgery because of symptoms related to catastrophic failure of the tibial post.
在后稳定型全膝关节置换术中，股骨凸轮和聚乙烯胫骨柱通常用于在牺牲后交叉韧带后恢复后稳定性。本文报告了一种假体设计中胫骨柱早期失败的高发生率，并研究了可能导致这种情况的变量。使用带有聚乙烯胫骨柱和股骨凸轮的全膝关节假体，为512例患者连续植入了564个后稳定型全膝关节。在术后平均40个月（范围24 - 83个月）进行临床和影像学结果测量。随访时，62例患者中的70个膝关节（12%）因与胫骨柱灾难性失败相关的症状而接受了翻修手术。
