The ankle sprain is the most common athletic injury. Nearly 85% of ankle sprains occur laterally, or on the outside of ankle joints. Sprains on the inside ligaments are less common. An ankle sprain occurs when the ankle rolls causing the ligaments to be stretched or torn. Many sprains occur when participating in sports, or by twisting the ankle when walking on an uneven surface. Some individuals, due to their bone structure or foot type, are more prone to ankle sprains. Although ankle sprains often heal without need for surgery, it is important toconsider the problem as a partial dislocation of the ankle joint and treat it accordingly.

Ankle sprains are the most common sports injury and also the most common sports injury that presents to the emergency room. However, due to the high number of sprained ankle cases each year, they are greatly under treated. This often leads to chronic ankle instability and a feeling of looseness of the ankle joint. The loose ankle is more likely to result in constant sprains and often lead to cartilage damage and tendon tears of the ankle region.