The anatomy of the coracohumeral ligament and its relation to the subscapularis muscle
The anatomy of the coracohumeral ligament and its relation to the subscapularis muscle
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DOI：
10.1016/j.jse.2014.02.009
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发表时间：
2014-10-01
影响因子：
3
通讯作者：
Akita, Keiichi
中科院分区：
文献类型：
--
作者：
Arai, Ryuzo;Nimura, Akimoto;Akita, Keiichi
背景：只有少数报道描述喙肱韧带延伸至肩胛下肌。目的：对肩胛下韧带与肩胛下肌之间的结构进行组织解剖学观察，探讨肩胛下韧带的功能。在9个肩膀，韧带的扩张进行了解剖学观察，并在这9个6，冈上肌和肩胛下肌的肌肉组织被删除，仔细检查这些肌肉肌腱的附件。将5个肩关节冷冻并矢状切成3 mm厚的切片。观察后，对其中3个肩关节进行组织学分析。结果：喙肱韧带起源于喙突水平支和喙突基部，包绕肩胛下肌的头侧部，其长度为1.5 ~ 1.5 mm，其长度为1.5 ~ 1.5 mm。韧带的浅层覆盖了肌肉前表面的广泛区域。在外侧，它突出于肱二头肌肌腱长头和肩胛下肌之间，并附着于从肩胛下肌止点延伸的腱底。结论：喙肱韧带包裹着肩胛下肌及其止点，是肩胛下肌和冈上肌的保持器。韧带由不规则和稀疏的纤维组成，并含有相对丰富的III型胶原蛋白，这意味着柔韧性。(C)2014年《肩肘外科杂志》董事会。
Background: Only a few reports describe the extension of the coracohumeral ligament to the subscapularis muscle. The purposes of this study were to histo-anatomically examine the structure between the ligament and subscapularis and to discuss the function of the ligament.Methods: Nineteen intact embalmed shoulders were used. In 9 shoulders, the expansion of the ligament was anatomically observed, and in 6 of these 9, the muscular tissue of the supraspinatus and subscapularis was removed to carefully examine the attachments to the tendons of these muscles. Five shoulders were frozen and sagittally sectioned into 3-mm-thick slices. After observation, histologic analysis was performed on 3 of these shoulders. In the remaining 5 shoulders, the coracoid process was harvested to investigate the ligament origin.Results: The coracohumeral ligament originated from the horizontal limb and base of the coracoid process and enveloped the cranial part of the subscapularis muscle. The superficial layer of the ligament covered a broad area of the anterior surface of the muscle. Laterally, it protruded between the long head of the biceps tendon and subscapularis and attached to the tendinous floor, which extended from the subscapularis insertion. Histologically, the ligament consisted of irregular and sparse fibers abundant in type III collagen.Conclusion: The coracohumeral ligament envelops the whole subscapularis muscle and insertion and seems to function as a kind of holder for the subscapularis and supraspinatus muscles. The ligament is composed of irregular and sparse fibers and contains relatively rich type III collagen, which would suggest flexibility. (C) 2014 Journal of Shoulder and Elbow Surgery Board of Trustees.