A tear or injury to the rotator cuff, an important part of your shoulder, can be painful and debilitating.
To understand the significance of the rotator cuff, it is important to understand what it is and what it does. The rotator cuff is comprised of four muscles and their associated tendons that form a covering around the humeral head of the shoulder. Your rotator cuff helps to raise and rotate your arm, and also assists in keeping your shoulder in its socket.
