Subacromial Impingement

Subacromial impingement syndrome is compression and abrasion of the greater tuberosity, rotator cuff tendons and the long head of the biceps tendon by the anterior acromion, bone spurs, coracoacromial ligament and the undersurface of the AC joint. This occurs during overhead activities.

Shoulder pain that may radiate down into the arm and is worse with overhead activity may be related to tendinitis caused by subacromial impingement syndrome. Shoulder pain may also be related to bursitis in the shoulder caused by bone spurs that can form with age. It generally causes pain in the shoulder and arm with overhead activity.

Further information about Subacromial Impingement can be found at the following sites:

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Synonyms: 
Subacromial Impingement

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