Iam the one who posted the roux goldwaithe knee problem. That's what I had for years. You need to go to your doc and get referred to a knee/bone specialist. Maybe you just need to exercise the muscles around it. That wasn't in my case. I was born with bad knees and over the years it got really bad. It takes a long time to get into seeing a specialist so start now. Take care. By the way...your condition is called a patella dislocation. Good luck.