Most people don't think about their joints until something starts to hurt. But joint health is one of those things that ...

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 ...

Flexion and extension refer to directions of motion that affect the angle of a joint. Flexion is when the joint is closed, while extension is when it is opened. Flexion and extension are the two ...