which rotator cuff muscle originates on the subscapular fossa of the scapula and inserts on the lesser tubercle of the humerus?
Shoulder & Neck Training Like A Beast! Muscle-Specific Hypertrophy Workouts! The only anterior muscle of the rotator cuff is the subscapularis. The subscapularis originates from the subscapular fossa of the scapula and inserts on the lesser tubercle of the humerus. It is a medial rotator of the arm. Of even greater concern is the subscapularis' job of preventing anterior dislocation of the head of the humerus. Trapezius: The trapezius is the easily distinguishable muscle superior muscle of the neck/back, is divided into three different groups: the superior fibers, middle fibers, and inferior fibers.