Rotator cuff tendinitis, or tendonitis, affects the tendons and muscles that help move your shoulder joint. If you have tendinitis, it means that your tendons are inflamed or irritated. Rotator cuff ...

Calcific tendonitis (or tendinitis) occurs when calcium deposits build up in your muscles or tendons. Although this can happen anywhere in the body, it usually occurs in the rotator cuff. The rotator ...

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 ...