构成的肌肉:共4块,即冈上肌、冈下肌、小圆肌及肩胛下肌。功能:4块肌肉构成的“旋转袖”犹如一动力性“韧带”,使肱骨头紧靠关节盂来稳固肩关节。外文字头记忆:冈上肌Supraspinatus(S),冈下肌Infraspinatus(I),小圆肌Teres minor(T),将各字头相连,即为SIT,坐”在大结节。肩胛下肌字头为Subscapulars(S),止于小结节。Supraspinatus冈上肌Glenoid cavity关节盂Infraspinatus冈下肌Greater tubercle大结节Sub ......