ARCHITECTURE OF SELECTED MUSCLES OF THE ARM AND FOREARM - ANATOMY AND IMPLICATIONS FOR TENDON TRANSFER
ARCHITECTURE OF SELECTED MUSCLES OF THE ARM AND FOREARM - ANATOMY AND IMPLICATIONS FOR TENDON TRANSFER
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DOI：
10.1016/0363-5023(92)90444-t
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发表时间：
1992-09-01
影响因子：
1.9
通讯作者：
BOTTE, MJ
中科院分区：
文献类型：
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作者：
LIEBER, RL;JACOBSON, MD;BOTTE, MJ
研究了21块不同前臂肌肉的结构特征（n = 154块肌肉）。肌肉包括指向食指、中指、无名指和小指的指共伸肌、指五指伸肌、固有伸肌、拇长伸肌、指浅屈肌、指深屈肌、拇长屈肌、旋方肌、掌长肌、旋圆肌和肱桡肌。利用激光衍射技术测定肌肉长度、质量、纤维夹角、纤维长度和肌节长度。根据这些值，计算生理截面积和纤维长度/肌肉长度比。单个指伸肌在建筑结构上发现相对相似。同样，深层和浅层指屈肌在结构上非常相似，除了小指浅屈肌，它比其他指屈肌小得多，短得多。肱桡肌和旋前圆肌有着显著不同的结构特征。虽然两种肌肉的质量几乎相同，但基于纤维排列的不同，肌肉的预测收缩性能有显著差异。臂桡肌的长纤维呈小旋角排列，其生理横截面积仅为旋前圆肌的三分之一，其短纤维呈高度旋角排列。利用这些结构数据和判别分析的统计方法，我们提供了额外的信息，可能有助于选择潜在的供肌来恢复拇指屈曲、拇指伸曲、手指伸曲和手指屈曲。
The architectural features of twenty-one different forearm muscles (n = 154 total muscles) were studied. Muscles included the extensor digitorum communis to the index, middle, ring, and small fingers, the extensor digit quinti, the extensor indicis proprius, the extensor pollicis longus, the flexor digitorum superficialis, the flexor digitorum profundus, the flexor pollicis longus, the pronator quadratus, the palmaris longus, the pronator teres, and the brachioradialis. Muscle length, mass, fiber pennation angle, fiber length, and sarcomere length were determined with the use of laser diffraction techniques. From these values, physiologic cross-sectional area and fiber length/muscle length ratio were calculated. The individual digital extensor muscles were found to be relatively similar in architectural structure. Similarly, the deep and superficial digital flexors were very similar architecturally, with the exception of the small finger flexor digitorum superficialis, which was much smaller and shorter than the rest of the digital flexors. The brachioradialis and the pronator teres had dramatically different architectural properties. While the masses of the two muscles were nearly identical, the muscles had significantly different predicted contractile properties based on their different fiber arrangement. The brachioradialis, with its long fibers arranged at a small pennation angle, had a physiologic cross-sectional area that was only one third that of the pronator teres, with its short fibers that were more highly pennated. Using these architectural data and the statistical method of discriminant analysis, we provide additional information that might be useful in the selection of potential donor muscles to restore thumb flexion, thumb extension, finger extension, and finger flexion.