Osgood schlatter still at 28 years old

i had osgood schlatters disease but i followed some treatments and i got back into playing shape by using RICE after every basketball practice.

When I was 13/14 I started to have tremedious knee pain and during one specific game of soccer my knee got knocked and that was it for me. After quite a few doctors and specialists they found out I had Osgood Schlatter. This was 15 years ago. Back then little information was known so it was hard to even track down that it is what I had. I had a severe case, I was in a leg brace for around 8 weeks with full time physiotherapy for a long time. I had exercises to do which I continued for about 4 years. All this time I was not allowed to play any sport (which was so huge for me, sport was my life) and now at 28 years old I am wondering why I still have this. I want to do something about it, I want to be able to do things and play sport. It is still tender and sore and things like kneeling on my knee just does not work. I can't run without large amounts of pain and even walking lately has been sore at times. When I go to the doctor they basically won't do anything apart from refer me to a physio, which I know is okay because it will help it get stronger. My question is though...I want it fixed, not manageable! Is this even an option? I hope I can find out any information cause at the moment I am lacking any idea of what to do.