The effect of subscapularis muscle contraction on coaptation of anteroinferior glenohumeral ligament–labrum complex after Bankart repair

Yoshiaki Itoigawa, Alexander W. Hooke, John W. Sperling, Scott P. Steinmann, Kristin D. Zhao, Eiji Itoi, Kai Nan An

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

Facilitation of healing is important for the anteroinferior glenohumeral ligament–labrum complex (AIGHL-LC) after Bankart repair in shoulder dislocation. The purpose of this study was to investigate the effect of subscapularis muscle loading on contact area and contact pressure between the subscapularis and AIGHL-LC and between the glenoid bone and the AIGHL-LC following Bankart repair. Twenty-two fresh-frozen cadaveric shoulders were used. They were attached to a shoulder-positioning device to which a compression force was applied. Loads applied to the supraspinatus, infraspinatus, and teres minor tendons were held constant. The loads applied to the subscapularis tendon were set at 0, 10, 20, and 30 Newton (N). Contact pressure and area between the subscapularis and the AIGHL-LC were measured with the arm at 4 rotational positions: 60° and 30° internal, neutral, and 30° external. After the Bankart lesion was created, the contact area and pressure between the AIGHL-LC and glenoid bone were measured while Bankart repair was performed with or without loading of the subscapularis. The contact area and pressures with 10, 20, and 30 N of subscapularis loadings were significantly greater than with 0 N of subscapularis loading at 60° internal rotation and 30° external rotation (P <.05). After Bankart repair, contact area and pressure with subscapularis loading between the AIGHL-LC and glenoid bone were significantly greater than without subscapularis loading (P <.01). We conclude that isometric contraction exercises of the subscapularis might facilitate healing of the AIGHL-LC after Bankart repair.

原文English
頁(從 - 到)134-140
頁數7
期刊Journal of Biomechanics
85
DOIs
出版狀態Published - 2019 3月 6

All Science Journal Classification (ASJC) codes

  • 生物物理學
  • 骨科和運動醫學
  • 生物醫學工程
  • 復健

指紋

深入研究「The effect of subscapularis muscle contraction on coaptation of anteroinferior glenohumeral ligament–labrum complex after Bankart repair」主題。共同形成了獨特的指紋。

引用此