3 years ago I was in a bad riding accident where my horse crushed me and slid on me for 100 ft. He went down so quickly, I had only enough time to pull up my leg. I was about to jump off, and it was too late. Granted we were galloping full speed and then suddenly went down. I spent a week in the hospital (in and out of surgeries to repair my ankle and foot, crushed it all). I was supposed to be on bed rest for 6 weeks, then maybe go back to school but keep it up mostly. Well on my second day home I was riding again (painful, and hard, but I learnt).
Now 3 years later I still have metal in my ankle and foot, and many problems. I used to be a very good volleyball player too (I got asked to play on many top level teams). I'm only now beginning to run again, but only when I'm on t-3's. Riding hurts, but to me its way worth it. I was told this will be a life long thing, but should get better when I'm fully done growing because me growth plate is also in shatters, so my bones are litterly hitting against each other with a lot of force which causes my extreme pain (hence the little running ability). Once I'm done growing, the growth plate becomes bone (I think... or something like that) and should solve some of my problems. I also have phyiso almost the whole time. It helped. I did play volleyball again for a bit, until my ankle growth plate shattered for the last time (the shattering of the growth plate was due to playing volleyball with a fractured growth plate, and then I would take a week off and play again).
I really hope your problems aren't as bad as mine, and that they never will be! It really really sucks, but riding is still worth it to me.