The rotator cuff is the name given to four of the muscles and tendons of the shoulder. These muscles help stabilize our shoulders and give them strength. One of the actions the muscles do together is rotate the shoulder. That is where the name "rotator cuff" comes from.

The muscle becomes very thin before it attaches to the bone it moves. This skinny part of the muscle is called a tendon. Any one or all of the tendons of the cuff muscles could develop tendonitis from overuse or improper use of the arm. Tendonitis of the rotator cuff is probably the most common reason for shoulder pain. Other symptoms of a rotator cuff injury are:
* limited motion,
* redness, warmth or swelling, and
* weakness.

Throwing sports, swimming or work that keeps the arms overhead put people at risk for rotator cuff tendonitis. Prevention is the key to avoiding tendonitis. Remember to:
* stay in shape,
* know your limits,
* use good posture for lifting, and
* drink plenty of fluids.

Sometimes a rotator cuff will tear. This is a more serious injury. An injury such as a fall on the shoulder may tear the rotator cuff. Surgery is often required to repair a tear.

Mild injuries can be treated with a combination of rest and gentle exercise. More serious injuries may be helped with:
* anti-inflammatory medications like aspirin or ibuprofen,
* ice packs, and possibly
* cortisone injections.

All shoulder pain that lasts longer than a few days, or sudden and severe shoulder pain should be seen by your healthcare provider. Your injury will be evaluated to determine what is wrong and to assist you in treatment.

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