Commentary on the rotator cuff tests8 The external rotation lag sign has a value as a specific test for the infraspinatus and supraspinatus muscles. The drop arm test produces few false-positive tests ...

Impingement symptoms may be the result of rotator cuff pathology, shoulder instability, scapular dyskinesis or muscle dysfunction, biceps pathology, SLAP lesions and chronic stiffness of the posterior ...

MRI (magnetic resonance imaging), a test that allows visualization of the rotator cuff, is usually not necessary in cases of shoulder impingement, but may be used to rule out more serious diagnoses.

This mechanical compression of tissue, primarily the rotator cuff tendons, occurs for a number of reasons. The primary reasons for shoulder impingement are linked to overuse and repetitive motion ...