The fibrous wall of the subacromial bursa, a synovium-lined sac between the rotator cuff and the coracoacromial arch, permitting frictionless movement of the cuff under the arch.
Reduces friction between the rotator cuff tendons and the coracoacromial arch during shoulder elevation.
Subacromial bursitis is the most common cause of shoulder pain — the bursa becomes inflamed from impingement, calcific tendinitis, or rotator cuff pathology. Subacromial corticosteroid injection targets the bursa. Arthroscopic bursectomy and acromioplasty address mechanical impingement.
Subacromial bursal inflammation from rotator cuff impingement, calcific tendinitis, or AC joint osteophytes producing superior shoulder pain with active elevation, treated by subacromial injection or arthroscopic bursectomy.
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