Oh ok I got it. So you have had surgery on both legs and this is the other leg that is bothering you. You need to tell your trainers so you can see a doctor since it hasn't responded to the normal treatment of ice and elevation and rest. It could be any number of things so hard to say. I know I personally had pain hyperextending my knee after plica surgery for a long while that I just contributed to scar tissue since my PT never had me work that leg through the full of range of motion that my knee goes through, the reason being a knee isn't "supposed" to hyperextend so she always had me stop my stretching before hyperextending. I just kept working my leg daily though hyper extension and using a foam roller for months and it eventually subsided. Your pain, however, sounds debilitating and the fact that you also have some patella pain returning is disconcerting. Without some kind of imaging it is hard to say what might be going on.