I hope it works. I saw a podiatricians and physiotherapists about my left ankle. It's much larger than normal due to extra bone around multiple breaks, and loss of cartilage, so I get bone on bone if my knee goes forward. But to get to the point, the best two things they told me were "we're used to stopping when things hurt so we don't make things worse. Fir this you need to do the opposite, the more it hurts, the more you're keeping mobility and building muscle around the joint" and in more carefully guarded words "A specialist will recommend fusing the joint, don't let them as you will lose so much mobilty which will be really bad long term". They did say that if a specialist offers to clean bone fragments out of the joint, that would be a good thing.
TL;DR if offered fusion of the ankle, think very carefully as it could stop you doing a lot of things.