Olerud C, Kongsholm J, Thuomas K A
Department of Orthopedics, Uppsala University Hospital, Sweden.
Acta Orthop Scand. 1988 Apr;59(2):183-5. doi: 10.1080/17453678809169705.
The functional anatomy of the distal radioulnar joint was studied in 10 healthy volunteers. The joint surface of both the ulnar head and the sigmoid notch of the radius form arcs of circles with small areas of contact because the diameters of the circles are different. The distal radioulnar joint is congruent throughout its range of motion, but the area of contact shifts from dorsal in the sigmoid notch in pronation to volar in supination. The insertion of the distal radioulnar ligaments on the ulnar head explains the congruence of the joint.
对10名健康志愿者的桡尺远侧关节进行了功能解剖学研究。尺骨头和桡骨乙状切迹的关节面形成直径不同的小接触面积的圆弧。桡尺远侧关节在其整个运动范围内都是相符的，但接触面积从旋前时乙状切迹的背侧转移到旋后时的掌侧。桡尺远侧韧带在尺骨头上的附着解释了关节的相符性。
