Hood R W, Vanni M, Insall J N
Clin Orthop Relat Res. 1981 Oct(160):94-105.
Two hundred twenty-five consecutive total knee replacements were reviewed radiographically to determine final alignment of the leg and accuracy of component placement. Of the 126 knees that were in varus preoperatively, only one knee was found to be in varus after knee replacement. Eighty-nine percent of the knees were found to be in 7 degrees +/- 5 degrees of valgus postoperation, while 7 degrees were in greater than 12 degrees valgus, 4 percent were in neutral position. Severe instability in the mediolateral plane was noted preoperatively in 62 knees in this series. Correction of more than 15 percent of deformity was necessary in 34 varus knee and 15 valgus knees. However, there has been no failure in the series attributable to instability in the mediolateral plane. Anteroposterior stability is controlled by the prosthesis design.
对225例连续的全膝关节置换术进行了影像学检查，以确定下肢的最终对线情况和假体植入的准确性。在术前呈内翻的126个膝关节中，膝关节置换术后仅发现1个膝关节仍为内翻。术后89%的膝关节呈外翻7度±5度，7%的膝关节外翻大于12度，4%的膝关节呈中立位。本系列中有62个膝关节术前存在严重的内外侧平面不稳定。34个内翻膝关节和15个外翻膝关节需要矫正超过15%的畸形。然而，该系列中没有因内外侧平面不稳定而导致失败的病例。前后稳定性由假体设计控制。
