GLENOHUMERAL MUSCLE FORCE AND MOMENT MECHANICS IN A POSITION OF SHOULDER INSTABILITY
GLENOHUMERAL MUSCLE FORCE AND MOMENT MECHANICS IN A POSITION OF SHOULDER INSTABILITY
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DOI：
10.1016/0021-9290(90)90295-e
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发表时间：
1990-01-01
影响因子：
2.4
通讯作者：
AN, KN
中科院分区：
文献类型：
--
作者：
BASSETT, RW;BROWNE, AO;AN, KN
研究了5具身体肩关节在90度功能位时肩带肌群的三维定位。绑架罪和90度。使用计算机辅助粗大肌肉横截面分析的方法进行外旋转。解剖两个标本，得到肌肉体积、肌纤维长度和生理横截面积。计算了横跨肩关节的每一块肌肉的作用线、力矩的大小和方向。从而得到了影响肩关节功能的肌力矩势的定量描述。在所研究的位置上，最有效抵抗前脱位的肩部屈肌是胸肌、二头肌短头、喙臂肌、前三角肌和肩下肌。肩袖肌和后三角肌大部分为内收肌，前三角肌、二头肌长短头和冈上肌为外展肌。在这个位置，外旋是由二头肌、喙臂肌和后三角肌的长头影响的，而其余肌肉的大部分作为内旋转肌。
The three-dimensional orientation of the shoulder girdle musculature was studied in five cadaver shoulders in the position of function at 90.degree. of abduction and 90.degree. of external rotation using a method of computer assisted gross muscle cross-section analysis. The muscle volume, muscle fiber length, and physiological cross-sectional area were obtained by dissecting two specimens. The line of action, the magnitude and orientation of the moment were calculated for each muscle crossing the shoulder joint. The quantitative description of the moment potential of muscle forces influencing shoulder function was thus obtained. The most effective flexors of the shoulder which also appear to resist anterior dislocation in the position studied are the pectoral, the short head of the biceps, coracobrachialis, anterior deltoid, and the subscapularis. Most of the rotator cuff muscles and the posterior deltoid acted as adductors, while the anterior deltoid, long and short head of the biceps, and supraspinatus were abductors. In this position, external rotation was effected by the long head of the biceps, coracobrachialis, and the posterior deltoid, while the majority of the remaining muscles acted as internal rotators.