Muscles of Shoulder Joint
Rotator cuff: The rotator cuff is an anatomical term given to the group of four muscles and their tendons that act to stabilize the shoulder. These muscles are: MUSCLES ATTACHMENT FUNCTIONS Supraspinatus Origin: Supraspinous Fossa Insertion: Greater Tubercle of The Humerus Performs abduction of the arm, and pulls the head of the humerus medially towards the glenoid cavity. Infraspinatus Origin: Infraspinatus Fossa Insertion: Infraspinous Fossa of The Scapula, Greater Tubercle of The Humerus. External rotation of the shoulder Teres minor Origin: Axillary Border of The Scapula Insertion: Humerus Help hold the humeral head in the glenoid cavity of the scapula. Subscapularis Origin: Subscapular fossa Insertion: Lesser Tubercle of The Humerus Internal rotation Adduction of humeral head. ...