著者

吉村 英哉 望月 智之 秋田 恵一 加藤 敦夫 山口 久美子 新井 隆三 菅谷 啓之 浜田 純一郎

出版者

日本肩関節学会

雑誌

肩関節 (ISSN:09104461)

巻号頁・発行日

vol.35, no.3, pp.707-710, 2011 (Released:2011-12-21)

参考文献数

18

被引用文献数

1

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Our previous study revealed that the most proximal portion of the subscapularis tendon extended a thin tendinous slip to the fovea capitis of the humerus, and that the coracohumeral ligament (CHL) together with the SGHL was shaped like a spiral sling, supporting the long head of biceps and attached to the tendinous slip. Little information is available, however, regarding the relationship between CHL and the insertion of subscapularis on the lesser tuberosity. To clarify the significance of CHL, we examined the morphology of CHL and the subscapularis insertion in 20 cadaveric shoulders. The anterior portion of CHL arises from the base of the coracoid process and fans out laterally and inferiorly on the subscapularis. The fibers envelop the tendinous portion of the subscapularis on either side. As a result, the ligament forms a cable-like anterior leading edge over the rotator interval. The subscapularis tendon can appear in relative anatomic position unless the arm is brought into internal rotation and relaxation is achieved. We also demonstrated that CHL was associated with opening the bicipital sheath along its medial border during shoulder elevation. The coracohumeral ligament might contribute to the stability of the subscapularis tendon and to the morphology of the bicipital groove.

著者

長谷川 聡 市橋 則明 松村 葵 宮坂 淳介 伊藤 太祐 吉岡 佑二 新井 隆三 柿木 良介

出版者

日本理学療法士学会

雑誌

理学療法学 (ISSN:02893770)

巻号頁・発行日

vol.41, no.2, pp.86-87, 2014-04-20 (Released:2017-06-28)

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本研究では健常者と肩関節拘縮症例における上肢拳上時の肩甲帯の運動パターンとリハビリテーションによる変化を検証した。健常肩においては,多少のばらつきはみられるものの,肩甲骨の運動パターン,肩甲骨周囲筋の筋活動パターンは一定の傾向が得られた。上肢拳上30°〜120°の区間では,肩甲骨の上方回旋運動はほぼ直線的な角度増大を示すことがわかった。そのスムーズな角度変化を導くためには,僧帽筋上部,僧帽筋下部,前鋸筋の筋活動量のバランスが必要で,上肢拳上初期から約110°付近までは3筋がパラレルに活動量を増加させ,拳上終盤においては僧帽筋上部の活動量増加が止まり,僧帽筋下部と前鋸筋の活動量を増加させる必要があることが明らかとなった。肩関節拘縮症例では,上肢拳上による肩甲骨の運動パターンは多様であり,一定の傾向はみられなかったため,代表的な症例の経過を示した。

著者

前田 和彦 菅谷 啓之 新井 隆三 森石 丈二 望月 智之 吉村 英哉 松木 圭介 秋田 恵一

出版者

日本肩関節学会

雑誌

肩関節 (ISSN:09104461)

巻号頁・発行日

vol.31, no.2, pp.209-211, 2007

被引用文献数

5

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It is generally believed that the supraspinatus tendon plays an important role in the shoulder function. However, precise anatomy of the supraspinatus tendon has not been well described. The purpose of this study was to investigate the anatomy of the supraspinatus tendon. 57 cadavers (103 shoulders) were used for this study. The clavicle and humerus were cut off at their proximal parts. After resection of the acromion, the coracohumeral ligament was carefully removed. In some specimens, the infraspinatus was completely removed from the humerus to observe the overlapping portion of the supraspinatus and infraspinatus. The supraspinatus muscle and its origin were carefully investigated macroscopically. In 4 shoulders, muscle fibers were completely removed to examine the direction and insertion of the supraspinatus tendon in detail. The supraspinatus muscle fibers originated from the spine of the scapula and the supraspinatus fossa, and they were running toward and attached to the thickest tendinous portion, which was located at the anterior part of the supraspinatus muscle. This tendinous portion was strongly attached to the most anterior portion of the greater tuberosity adjacent to the bicipital groove or at the lesser tuberosity (21.3%). Another part of the supraspinatus, which was located posteriorly, was attached to the greater tuberosity adjacent to the articular cartilage as a thin membrane. The insertion of the supraspinatus tendon revealed to be the most anterior portion of the greater tuberosity and the lesser tuberosity. These results suggested that the supraspinatus tendon worked more efficiently as an abductor of the shoulder joint with the arm externally rotated than internal rotation.