Posterior shoulder dislocation occurs when the top of the upper arm bone, known as the humerus, moves backward out of its socket. This causes pain, muscle spasms, and a limited range of motion. The ...

The shoulder muscles are responsible for maintaining the widest range of motion of any joint in your body. This flexibility is also what makes the shoulder prone to instability and injury. Muscles, ...

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Your shoulders do a lot of work throughout the day. You need them to lift, pull, push, and reach, and even to walk and sit up straight. It’s no wonder they sometimes feel tired or tight, and may feel ...