Department of Orthopaedic Surgery, Breach Candy Hospital, Mumbai, India.
J Arthroplasty. 2009 Dec;24(8):1164-9.e1. doi: 10.1016/j.arth.2009.05.005. Epub 2009 Jul 4.
Forty extra-articular deformities (22 femoral and 18 tibial) in 34 patients (mean age, 63.1 years) were studied. Mean coronal extra-articular deformity was 9.3 degrees ; mean preoperative limb alignment was 166.7 degrees . Three limbs underwent simultaneous corrective osteotomy; the rest were treated with intra-articular correction during computer-assisted total knee arthroplasty (TKA). Mean postoperative limb alignment was 179.1 degrees . At a mean follow-up of 26.4 months, the Knee Society knee score improved from a mean preoperative score of 49.7 to 90.4 points postoperatively; function score improved from 47.3 to 84.9 points. Computer-assisted TKA is a useful alternative to conventional TKA for knee arthritis with extra-articular deformity where accurate restoration of limb alignment may be challenging because of the presence of a deformed tibia or femur or in the presence of hardware.
对 34 名患者（平均年龄 63.1 岁）的 40 例关节外畸形（22 例股骨和 18 例胫骨）进行了研究。平均冠状面关节外畸形为 9.3 度；术前平均下肢对线为 166.7 度。3 条肢体同时接受矫正性截骨术；其余在计算机辅助全膝关节置换术（TKA）中进行关节内矫正。术后平均下肢对线为 179.1 度。平均随访 26.4 个月后，膝关节协会膝关节评分从术前平均 49.7 分提高到术后 90.4 分；功能评分从 47.3 分提高到 84.9 分。计算机辅助 TKA 是一种有用的替代传统 TKA 的方法，适用于存在关节外畸形的膝关节关节炎，在这种情况下，由于胫骨或股骨变形或存在内固定物，准确恢复下肢对线可能具有挑战性。
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