I've previously had patellar tendonitis in the front of both of my knees, three years of physio, injections and ops did nothing (only really made it worse) and then it suddenly went away. All of a sudden though I have the same symptoms (nagging pains, soreness,etc) in the backs of my knees and also my elbows. It was two years ago since it cleared up and I've been back playing sport and everything. What were your experiences with tendonitis, especially with it in the back of knees? What did you do to clear it up, did it work and how long did it take, please help me.........