Sprain is an injury to a ligament or to the tissue that covers a joint. Ligaments are bands of stringy fibers that hold the bones of a joint in proper position (see Ligament ). The tissue that covers the joint is called the capsule. Most sprains result from a sudden wrench that stretches or tears the tissues of the ligaments or capsule. Sprains of the ankle and wrist are most common, but a person may sprain any joint.
A sprain is usually extremely painful. The injured part often swells and turns black and blue. Doctors may prescribe rest, elevation of the injured part, or the application of cold compresses or elastic bandages to reduce swelling. Special types of exercise also may help reduce swelling and speed recovery.
