Hille E, Schulitz K P
Arch Orthop Trauma Surg (1978). 1985;104(2):74-7. doi: 10.1007/BF00454240.
In the period from 1980 to 1981, knee joint radiographs were made in 82 patients following the clinical diagnosis of patellar chondropathy. A total of 119 knee joints with patellar chondropathy and 45 with no specific complaints on the contralateral side, in addition to a control cohort consisting of 28 persons, i.e., 56 knee joints with no complaints, were evaluated. Tangential radiographic images of the patellae enabled us to measure directly the rotation of the patella around the axis perpendicular to its center. It could be established that all healthy patellae underwent medial rotation between 45 and 60 degrees of knee flexion which was maintained up to 90 degrees, whereas the affected knee joints did not rotate.
在1980年至1981年期间，对82例临床诊断为髌软骨病的患者进行了膝关节X线片检查。除了由28人组成的对照组（即56个无主诉的膝关节）外，共评估了119个患有髌软骨病的膝关节和45个对侧无特定主诉的膝关节。髌骨的切线位X线图像使我们能够直接测量髌骨围绕垂直于其中心的轴的旋转情况。可以确定的是，所有健康的髌骨在膝关节屈曲45度至60度之间会发生内旋，并一直保持到90度，而患侧膝关节则不发生旋转。
