What is the rotator cuff?

Posted November 22nd, 2009.

The rotator cuff is the group of four tendons that stabilize the shoulder joint. The tendons hook up to the four muscles that move the shoulder in various directions.There are four muscles whose tendons form the rotator cuff: the subscapularis muscle, which moves the arm by turning it inward (internal rotation); the supraspinatus muscle, which is responsible for elevating the arm and moving it away from the body; the infraspinatus muscle, which assists the lifting of the arm during turning the arm outward (external rotation); and the teres minor muscle, which also helps in the outward turning of the arm. Read More here!