Department of Orthopaedics, Golden Jubilee National Hospital, Clydebank, West Dunbartonshire.
J Arthroplasty. 2014 Jun;29(6):1133-7. doi: 10.1016/j.arth.2013.11.009. Epub 2013 Nov 22.
This study assessed whether using a variable distal valgus resection angle improved post-operative coronal lower limb alignment in total knee arthroplasty (TKA). Two groups were compared: Fixed (n = 124), where a fixed distal valgus resection angle of 7° was used; Variable (n = 87), where the resection angle was adjusted to the measured femoral mechanical anatomical (FMA) angle of the patient. FMA and mechanical femoro-tibial (MFT) angles were measured on pre-operative and post-operative hip-knee-ankle radiographs. 85% of patients in the Variable group had a post-operative MFT angle within 0° ± 3°compared to 69% in the Fixed group (P = 0.006). The use of a fixed distal femoral resection angle for all patients is not appropriate. Setting the resection to an individual patient's FMA angle can significantly improve the post-operative MFT angle.
本研究评估了在全膝关节置换术（TKA）中使用可变的远端后倾截骨角度是否能改善术后冠状下肢对线。比较了两组：固定组（n = 124），使用 7°的固定远端后倾截骨角度；可变组（n = 87），截骨角度根据患者测量的股骨机械解剖（FMA）角度进行调整。术前和术后髋关节-膝关节-踝关节 X 线片上测量 FMA 和机械股骨-胫骨（MFT）角度。与固定组（69%）相比，可变组有 85%的患者术后 MFT 角度在 0°±3°范围内（P = 0.006）。对于所有患者使用固定的远端股骨截骨角度是不合适的。将截骨角度设置为个体患者的 FMA 角度可以显著改善术后 MFT 角度。
