Rotational deformity in varus osteoarthritis of the knee - Analysis with computed tomography
Rotational deformity in varus osteoarthritis of the knee - Analysis with computed tomography
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DOI：
10.1097/01.blo.0000150465.29883.83
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发表时间：
2005-04-01
影响因子：
4.2
通讯作者：
Takaoka, K
中科院分区：
文献类型：
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作者：
Matsui, Y;Kadoya, Y;Takaoka, K
通过计算机断层扫描对膝关节内翻骨关节炎的旋转畸形进行评估。术前CT扫描包括接受全膝关节置换术的114例150膝和20例31膝的对照组。以临床股骨上髁轴和胫骨粗隆(髌腱)为参照，对股骨胫骨旋转进行量化。骨关节炎患者膝关节按股胫角分为3组(组1，内翻0度~9度，n=87；组2，内翻10度~19度，n=51；组3，内翻20度以上，n=12)，并进行统计学分析。骨性关节炎患者存在旋转畸形(胫骨外旋)，且内翻畸形增加的膝关节旋转畸形较大(平均标准差，第1组为-2.24度+/-4.19度；第2组为0.33度+/-4.14度；第3组为5.33度+/-5.71度)。当每个膝关节的股骨旋转按相应的股骨-胫骨角度分层时，我们发现了相关性。这些信息将有助于减少全膝关节置换术中股骨和胫骨假体之间的旋转不匹配，并阐明膝关节内翻骨关节炎的发病机制。
Rotational deformities in varus osteoarthritis of the knee were evaluated with computed tomography. Preoperative computed tomography scans of 150 knees (114 patients) having total knee arthroplasty and 31 control knees (20 patients) were included. The femorotibial rotation was quantified using the clinical epicondylar axis of the femur and the tibial tuberosity (patella tendon) as the references. The knees with osteoarthritis were divided into three groups according to the femorotibial angle (Group 1, 0 degrees-9 degrees varus, n = 87; Group 2, 10 degrees-19 degrees varus, n = 51; Group 3, 20 degrees or greater varus, n = 12) and statistically analyzed. Rotational deformities (external rotation of the tibia) existed in knees with osteoarthritis and were larger in knees with increased varus deformities (mean standard deviation, -2.24 degrees +/- 4.19 degrees in Group 1; 0.33 degrees +/- 4.14 degrees in Group 2; and 5.33 degrees +/- 5.71 degrees in Group 3). When the femorotibial rotation of each knee was stratified by the corresponding femorotibial angle, we found a correlation. The information should help minimize the rotational mismatch between the femoral and the tibial components in total knee arthroplasty and elucidate the pathogenesis of varus osteoarthritis of the knee.