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 ...

Your body is made up of hundreds of joints. These joints attach bones together and help your body move. The sternoclavicular joint is one of four joints in your shoulder. When the sternoclavicular ...

Immunostaining depicts collagen-2 (cyan) and nucleus (magenta) at the articulation in the little skate embryo's pelvic joint. Synovial joints are a key feature of most vertebrate skeletons, providing ...

Shoulder instability occurs when the arm’s ball joint moves in and out of the shoulder socket joint. Chronically unstable shoulders can lead to loose shoulder joints that slip out of place repeatedly.

Hinge joints move in one direction, like doors, and are in knees, elbows, and fingers. Injuries or arthritis can cause pain and swelling in hinge joints, but ice and rest help reduce pain. Physical ...

Severe pain from arthritis in your middle knuckle (PIP joint) may require replacement (arthroplasty). Silicone replacements are the most common. They tend to have the best results and typically last ...