Hi Stewart, It's so sad to hear that you are suffering from ankle/ Foot pain for the past 16 months. In normal cases, physiotherapy is usually the starting treatment for foot and ankle injuries. The therapist will take a history of your ankle pain and analyze how your ankle generally moves to diagnose your pain. Physiotherapy fails only in rare cases. As you said, now you can take a break from normal activities and exercise to reduce strain on your leg. After that, visit an orthopedic surgeon and ask about the Hyaluronic acid injection. It may help with knee pain