A member asked:

Please explain rotator cuff pain on left arm and shoulder?

A doctor has provided 1 answer

See below: The rotator cuff consists of four muscles and is the primary mechansim of rotatory movement of the arm (think of throwing). The mechanism is a complicated system of loaded/camed pulleys. With overuse (and age) the tendons become rough and inflammation set in resulting in pain.

Answered 3/29/2019

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