A sprain is an injury to the ligaments at or near a joint.
Ligaments are strong cords of tissue that hold joints together and connect adjacent bones.
In a sprain, the ligaments have been subject to a wrenching, twisting or tearing force. A minor sprain results when the ligament is stretched. In more serious sprains, the ligament may be partially or completely torn. The ankle is the most frequently sprained joint. It can be very painful and any movement of the joint will increase the pain.