An ankle dislocation occurs when the bones of the ankle joint are forced out of their normal position. This type of injury is usually caused by a sudden impact, severe twisting, or a high-velocity injury. Common symptoms include intense pain, swelling, deformity, and an inability to bear weight on the affected ankle. Treatment may involve immediate reduction, or realignment, of the bones followed by immobilization with a cast or brace, physical therapy, and in some cases, surgery to repair any damage to the ligaments or bones in the ankle joint.