Definition: common musculoskeletal injury in which the ligaments of the ankle partially or completely tear due to sudden stretching
Medical terminology: medial ankle sprain, lateral ankle sprain, inversion sprain
Ankle sprains are the most frequent type of injuries experienced in sports and even during everyday activities. An ankle sprain occurs when there is an excessive twisting motion of the ankle.
Any of these things may be damaged in an ankle injury: a bone may be fractured or broken, excessive muscle strain around the ankle joint may cause a tendonitis (inflammation of a tendon), or a ligament may be stretched or torn.
The term ankle sprain usually refers to the injury of a ligament.