Ankle? It seems to be going on a long time.
No back. Ankle is getting better and I'd probably not complain about it at all if my back wasn't limiting me. A few months ago pain in my hip got really bad. After a bone scan they think it might be spondylolysis and I've been waiting for a CT scan to confirm. I've had back issues on/off again for years. So in some ways I'm happy to hear there is an actual reason versus the usual reason I often got "everyone deals with back pain".
Hope they figure it out for you. It wouldn't be great news but at least you'd know what types of treatment might help.