Kuriwaka Y
Nihon Seikeigeka Gakkai Zasshi. 1982 Aug;56(8):713-26.
Clinical picture of osteoarthritis of the knee (OA) was investigated from the viewpoint of dynamic rotatory movement of the knee. With regard to 140 normal knee joints and 263 OA joints, dynamic rotatory movement of the knee was measured and analyzed on serial lateral X-ray films of the knee during loading. In normal knee joints, the femur showed internal rotation on the tibia from a 90 degrees flexion to maximal extension. In OA joints, rotatory movement on terminal extension of the knee, i.e., screw home movement, was disturbed in the early stage. With progress of osteoarthritis, the previously mentioned rotatory movement of the knee joint was reduced, and finally adverse rotatory movement appeared. The measured results of the rotatory movement of the knee in normal and every grades of OA joints were analyzed by the least squares method and subsequently depicted in an approximate curve of the fifth degree. Consequently, osteoarthritis of the knee was graded into 4 groups, on the basis of rotatory movement of the knee. Thus, it is concluded that disturbed rotatory movement of the knee may be a key factor in the progress of osteoarthritis of the knee.
从膝关节动态旋转运动的角度对膝关节骨关节炎（OA）的临床表现进行了研究。针对140个正常膝关节和263个骨关节炎关节，在负重过程中对膝关节的系列侧位X线片进行测量和分析，以测量和分析膝关节的动态旋转运动。在正常膝关节中，股骨在胫骨上从90度屈曲到最大伸展时呈内旋。在骨关节炎关节中，膝关节终末伸展时的旋转运动，即“锁定运动”，在早期就受到干扰。随着骨关节炎的进展，上述膝关节的旋转运动减少，最终出现反向旋转运动。通过最小二乘法分析正常膝关节和各等级骨关节炎关节膝关节旋转运动的测量结果，随后描绘为五次近似曲线。因此，根据膝关节的旋转运动，将膝关节骨关节炎分为4组。因此，可以得出结论，膝关节旋转运动紊乱可能是膝关节骨关节炎进展的关键因素。
