Impingement - Rotator Cuff Tendonitis

Shoulder pain is a common physical complaint.  The rotator cuff muscles and tendons form a covering around the head of the humerus (upper arm bone) and attach it to the shoulder blade (scapula).  The rotator cuff muscles serve to dynamically stabilize the shoulder joint during movement.

Symptoms

Symptoms of impingement include pain when lifting your arm overhead, pain with overhead sporting activities and pain that radiates over the deltoid/side of the upper arm. 

Causes

These are most likely to occur in athletes who use their arms overhead (swimming, basketball, tennis, baseball).  Weakness of the muscles in your back (latissimus, trapezius, rhomboids) can also lead to impingement symptoms by disrupting the coordinated movement between the shoulder blade and the humerus. 

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