The TuneUp Program

Supraspinatus is named for its location, superior to the scapula spine. It attaches along the medial section of the supraspinous fossa, the hollow above the scapula spine, and inserts onto the top of the humerus. It assists in abduction of the humerus and plays a significant role in stabilising the shoulder joint as gravity pulls the arm down.

It is part of the rotator cuff group of muscles, sharing its tendon insertion on the humerus with infraspinatus, teres minor and subscapularis. The rotator cuff as a group help stabilise the scapula, pulling the head of the humerus into the glenoid fossa of the scapula.