Janssen G
Z Orthop Ihre Grenzgeb. 1978;116(5):656-6.
Using a new method for measuring the distal femoral torsion (Janssen a. Prüssner 1977) it is possible to determine the encreased medial torsion of the distal femur in most of the patients with dislocation of the patella. A group of patients with dislocated knee-cap was studied for this purpose. The characteristic clinical and x-ray features are listed and weighted according to their value. They throw a new light on the pathogenesis and pathomechanics of patellar luxation, and point to the need to reclassify the different types of luxations according to etiological aspects.
采用一种测量股骨远端扭转的新方法（扬森和普吕斯纳，1977年），可以确定大多数髌骨脱位患者股骨远端内侧扭转增加。为此对一组髌骨脱位患者进行了研究。列出了典型的临床和X线特征，并根据其价值进行加权。它们为髌骨脱位的发病机制和病理力学提供了新的线索，并指出有必要根据病因对不同类型的脱位进行重新分类。
