The subscapularis is a large triangular muscle. Supraspinatus, Infraspinatus, Subscapularis, and Teres Minor together This Four Muscle work as rotatory to the Humerus. So, also known as Rotator Cuff.
ORIGIN:
The subscapularis is originated from subscapular fossa of the scapula.
INSERTION:
The subscapularis is inserted at lesser tubercle of the humerus.
ACTION:
- The subscapularis is chief medial rotator of the humerus, assisted by pectoralis major.
- The subscapularis is helped to hold the head of a humerus in glenoid cavity, stabilizes the shoulder.
NERVE SUPPLY:
The subscapularis is supplied by the Subcapular nerve.
