The effect of posterior tibial slope on range of motion after total knee arthroplasty
The effect of posterior tibial slope on range of motion after total knee arthroplasty
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DOI：
10.1016/j.arth.2005.08.023
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发表时间：
2006-09-01
影响因子：
3.5
通讯作者：
Markel, David C.
中科院分区：
文献类型：
--
作者：
Kansara, Devanshu;Markel, David C.
理论上，后倾角有利于全膝关节置换术后的活动度（ROM）。本研究旨在评估0度和5度后倾斜髓内（IM）切割导向器的准确性以及胫骨后倾斜度对术后ROM的影响。31例连续患者接受了全膝关节置换术，使用切割块和髓内切割导向器，设计用于传递0度胫骨后倾斜度（组1）。随后30例患者（第2组）使用了5度胫骨截骨块。后倾角测量值代表侧位X线片上平行于关节面绘制的线与垂直于胫骨长轴绘制的线之间的角度。第1组和第2组的平均术后胫骨倾斜度分别为1.8度和5.5度。两组之间的术后屈曲或特殊外科医院评分改善无显著差异。胫骨截骨导向器准确地实现了预期的后倾角，但增加后倾角并未导致ROM或特殊外科医院功能评分显著增加。
Posterior slope has been theorized as advantageous to range of motion (ROM) after total knee arthroplasty. This study was undertaken to assess the accuracy of a 0 degrees and a 5 degrees posterior sloped intramedullary (IM) cutting guide and the effect of the posterior tibial slope on postoperative ROM. Thirty-one consecutive patients underwent total knee arthroplasty using a cutting block and intramedullary cutting guide designed to impart a 0 degrees posterior tibial slope (group 1). A 5 degrees tibia cutting block was used in 30 subsequent patients (group 2). The posterior slope measurement represented the angle between a line drawn parallel to the articular surface and a line drawn perpendicular to the long axis of the tibia on a lateral radiograph. Mean postoperative tibial slope measured 1.8 degrees for group 1 and 5.5 degrees for group 2. There was no significant difference between groups for postoperative flexion or improvement of Hospital for Special Surgery score. The tibial cutting guides accurately achieved the intended posterior slope, but increasing posterior slope did not result in a significant increase in ROM or Hospital for Special Surgery functional score.