Murata H, Ikuta Y, Murakami T
From the Department of Orthopedic Surgery, Hiroshima University School of Medicine, Hiroshima, Japan.
J Shoulder Elbow Surg. 1993 Jul;2(4):175-81. doi: 10.1016/1058-2746(93)90060-T.
The architecture of the articular surface of the elbow joint and the location of cartilage degeneration with aging was analyzed. The study included 131 elbow joints of 66 cadavers preserved by embalming. The age of subjects at death ranged from 49 to 96 years (mean 79 years). The elbow joint was observed macroscopically and analyzed. The degenerative changes in the radiohumeral joint were always more advanced than those in the humeroulnar joint. The erosion or chondral defect in the capitulum is located in the area 45° anterior to the long axis of the humerus. The anterior part of the erosion in the crest separating the trochlea from the capitulum was roughly 48.5° to the long axis of the humerus. It was similar in position to the erosion found in the capitulum. Based on the degree and area of cartilage degeneration, the changes in the radial head could be divided into four types. The mode of radial head cartilage degeneration correlated well with cartilage degeneration in the radiohumeral articulation and also with osteoarthritis of the elbow joint. Simplistically, one could classify elbow joint osteoarthritis by knowing the extent of radial head degeneration.
分析了肘关节关节面的结构以及随着年龄增长软骨退变的位置。该研究纳入了66具经防腐处理的尸体的131个肘关节。受试者死亡时的年龄在49岁至96岁之间（平均79岁）。对肘关节进行了宏观观察和分析。桡肱关节的退变变化总是比肱尺关节更严重。肱骨小头的侵蚀或软骨缺损位于肱骨长轴前方45°区域。将滑车与小头分开的嵴上侵蚀的前部与肱骨长轴大致呈48.5°。其位置与在小头发现的侵蚀相似。根据软骨退变的程度和面积，桡骨头的变化可分为四种类型。桡骨头软骨退变模式与桡肱关节的软骨退变以及肘关节骨关节炎密切相关。简单地说，通过了解桡骨头退变程度可以对肘关节骨关节炎进行分类。
