Shoulder instability occurs when your shoulder joint (ball and socket) has lost is normal alignment (ball resting symmetrically in the socket), which causes your arm to lose its support. The most ...

A shoulder fracture is a broken bone in the shoulder. These fractures typically occur after a fall or high impact collision. In most cases, surgery is not necessary to treat a shoulder fracture. The ...

Shoulder blade pain can be caused by muscle strain, rotator cuff tears, or joint conditions like osteoarthritis. Symptoms of shoulder blade pain include dull, sharp, or burning pain, weakness, and a ...

Recurring pain in your shoulder can be more than just a nuisance—it could be arthritis, defined as the breakdown of cartilage in the joint. Orthopedic specialist Chris Joyce, MD, explains how to ...

Shoulder injuries and different types of arthritis may cause acromioclavicular (AC) joint pain. The AC joint in the shoulder connects the collarbone to part of the shoulder blade. One of the AC ...

Whether you’ve had an injury or you’re experiencing arthritis, shoulder pain can have debilitating effects on everyday life, and especially on sleep. To learn ...

The infraspinatus is one of four muscles that make up the rotator cuff, which helps your arm and shoulder move and stay stable. Your infraspinatus is in the back of your shoulder. It attaches the top ...