The ankle joint is where the foot and leg come together in a combination of bones, muscles, tendons, and ligaments. Because the ankle plays such an important role in the body, it is also prone to a variety of injuries. Ankle pain occurs most commonly on the inside, outside, and back of the joint. The severity of ankle pain can vary from mild to severe. While certain types of ankle pain can be easily treated at home, other types may require medical assessment and intervention.