The role of the long head of biceps brachii in the stabilization of the head of the humerus.
The role of the long head of biceps brachii in the stabilization of the head of the humerus.
复制标题
肱二头肌长头在稳定肱骨头中的作用。
DOI：
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复制
发表时间：
1989
影响因子：
4.2
通讯作者：
P. Balasubramaniam
中科院分区：
文献类型：
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作者：
Kumar Vp;K. Satku;P. Balasubramaniam
本文研究了肱二头肌长头肌腱在肱骨头稳定中的作用。肱骨头的向上移动是通过观察肩关节x线片上肩肱骨距离的减少来测量的。肱二头肌短头张紧时肩肱间隔有统计学意义的减少，而肱二头肌长头张紧或肱二头肌双头张紧时肩肱间隔无统计学意义的变化。在两个头都绷紧的情况下切断长头的肌腱导致肱骨头明显向上移动。肱二头肌长头的重要功能之一是在肘关节强力屈曲和前臂旋后时稳定肱骨头。肩关节内肌腱节段在手术过程中的牺牲可能导致不稳定和功能障碍。
The role of the tendon of the long head of the biceps in the stabilization of the head of the humerus was studied in 15 freely hanging anatomic specimen shoulders. Upward migration of the humeral head was measured by noting any reduction in the acromiohumeral distance in roentgenograms of the shoulder. There was a statistically significant decrease in the acromiohumeral interval on tensing the short head of biceps, but there was no significant change in the interval on tensing either the long head or both heads of the biceps brachii. Severing the tendon of the long head while both the heads were tensed caused a significant upward migration of the head of the humerus. One of the important functions of the long head of the biceps is to stabilize the humeral head in the glenoid during powerful elbow flexion and forearm supination by the main muscle. Sacrifice of the intraarticular segment of this tendon in surgical procedures of the shoulder may produce instability and dysfunction.