Ankle and foot injuries can include ligament sprains, fractures, and tendon injuries. The most common ankle injury is a lateral ankle sprain caused by inversion of the foot. Ankle sprains are graded based on severity from grade 1 to 3. Fractures of the ankle include fractures of the medial and lateral malleoli. Other injuries discussed include fractures of the talus, calcaneus, metatarsals and phalanges. Injuries are treated initially with RICE and rehabilitation, while more severe injuries may require surgery. Complications can include malunion, nonunion, arthritis and tendonitis.