What Is a Rotator Cuff? Your rotator cuff is made up of muscles and tendons that keep the ball (head) of your upper arm bone (humerus) in your shoulder socket. It also helps you raise and rotate your ...
A rotator cuff tear is a partial or complete severing of the rotator cuff tendons in the shoulder, usually due to injury. A strain is different, as it involves an overstretch of the tendons. The ...
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