A buildup of calcium develops in the muscles that move the shoulder. This causes pain and inflammation.
Common Causes
Repetitive overhead use of the arm, frequent lifting: tennis, hammering, gardening, weightlifting; occasionally there is a history of trauma to the shoulder.
Symptoms
Pain in the shoulder or down the side of the arm. Pain with lifting the arm overhead, or sleeping on the injured side.
Physical Findings
Tenderness, positive ‘impingement test.’
Workup
X-Rays, physical examination and MRI (rarely).
Non-operative Treatment
Rest, anti-inflammatory medication and physical therapy. Possibly a trial of a corticosteroid injections.
Surgical Treatment
Shoulder arthroscopy, with subacromial decompression.
Injury Comment
Generally cured with non-operative care. Arthroscopy is highly successful, with an early return to activities, and extremely low risk of recurrence. Prolonged or worsening symptoms may be signs of a rotator cuff tear.