An anatomical study on the Stener-type lesion of the radial collateral ligament of the metacarpophalangeal joint of the thumb

R. Jakubietz, S. Erguen, Silvia Bernuth, R. Meffert, F. Gilbert, M. Jakubietz
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引用次数: 4

Abstract

The Stener-type lesion of the radial collateral ligament is rare. The insertion of the abductor pollicis brevis is believed to preclude its occurrence. The aim of this study was to determine whether this lesion can be induced mechanically. Four specimens were tested in neutral rotation and 20° of supination, in 45° and 30° of flexion, and in the neutral position. The angle of ulnar adduction to form a Stener-type lesion was measured. The lesion occurred only in 45° flexion in all specimens. A lesser angle of flexion decreased the rate of ligament displacement. In the neutral position no ligament displacement was found. A Stener-type lesion of the radial collateral ligament can occur in ulnar adduction and flexion of the metacarpophalangeal joint. Supination of the joint increases the likelihood of ligament displacement. As distal ruptures of the radial collateral ligament are uncommon, a high index of suspicion is required for diagnosis.
拇指掌指关节桡侧副韧带stener型病变的解剖学研究
桡骨副韧带的stener型病变是罕见的。短拇外展肌的插入被认为可以防止其发生。本研究的目的是确定这种病变是否可以机械诱导。4个标本分别在中性旋转和旋后20°、45°和30°屈曲以及中立位进行测试。测量尺内收形成狭窄型病变的角度。在所有标本中,病变仅发生在45°屈曲。较小的屈曲角度可降低韧带移位率。中立位未见韧带移位。掌指关节尺内收和屈曲时可发生桡骨副韧带的张张型病变。关节旋后增加韧带移位的可能性。由于桡骨副韧带远端断裂并不常见,诊断时需要高度的怀疑。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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