I get ankle pain all the time, I have brace i wear daily. Used to have to take pain pills before I rode, now with this brace and if I stay active, my ankle normally is fine. But I haven't rode in 4 months and went on a 2 hour trail ride, and I didn't think I would be able to get off, I had so much ankle pain. So try walking/running more, I don't know how fit you are, also what helps me is drinking at least one glass of milk and one glass of V8 a day.
Extreme Trail Rider and Barrel Racer.
King - 11 year old Tennessee Walker Gelding
Sassie- 7 Year old Appaloosa Mare