In sports, the ankle joint, as a weight-bearing joint, is subjected to 1.25 to 5.5 times the weight of the body. In people who are less active, sudden exercise, followed by ankle pain and swelling is usually due to an injury to the ankle joint. In this case, the first thing to do is to stop exercising, reduce weight bearing on the ankle joint and apply appropriate brakes. If the pain is not relieved, you should consult an orthopaedic surgeon or a sports medicine specialist for a careful examination and, if necessary, an X-ray, CT or MRI of the ankle joint, to avoid the possibility of an acute injury being treated improperly and causing traumatic osteoarthritis, which can lead to persistent ankle pain.