First post, but long time lurker. This forum has been very helpful to me in my recovery. About me: 58 yo, 5’2”, 118#, fairly active, with rheumatoid arthritis for 30 years. No other health problems. Had left TKR 1/9/17. I did great during surgery, post-op, recovery, PT, etc., from January 2017 till October 2017. Had the Cconformis knee. I was released from PT in April 2017. Kept doing exercises all summer and fall. In Sep/Oct I added addition strengthening exercises gradually as the leg with the TKR was noticeably (to me) less muscular/toned. I did some lunges and leg extensions which did not hurt at the time. A couple days later, I had a searing pain in my left thigh, felt like a butcher knife had stabbed me in my thigh, same side as the TKR. Went to see my OS, they xrayed knee and it was fine. I was diagnosed with IT band strain and sent for more PT. I did all PT but pain was still there and worsening. PTs were great but they were concerned that I want getting any better and said they had done all they could do. I was walking with a limp now. Here’s where the knee comes in. I started having sharp pain in left TKR in December 2017. Went back to OS and he said more PT. I did this on my own. In the spring, the pain became more diffuse in my thigh plus the knee pain. I asked for an MRI of the area, from my rheumatologist as I was about to give up on my OS and it ended up that I had a small tear in the thigh area and a small labral tear in hip. My OS said it was probably from the October injury but the pain was disproportionate to the injury. My rheumatologist, who is wonderful, said the same thing. My OS wasn’t doing anything, so I switched to a new OS in May 2018. By this time, the pain is in my hip. Groin, back, all on left side, and I am in severe pain. Still working full time, have taken no time off for it, in a moderately active job in healthcare. He examined me thoroughly and couldn’t find anything bone or muscle related, did numerous xrays. Said my knee looked great. Referred me to a pain clinic. Pain clinic did xrays of back and said I have a small fracture in L5. I have started on injections in back. Only one injection so far and that has helped calm everything down by about 70% EXCEPT for the stabbing knee pain on outer side of knee which only presents when I have weight on it. Actually, the pain in the knee is a little less than it was, but I have some more injections to go. Pain clinic said all my pain is coming from the back and is referred pain. I am still thinking in my gut that due to me limping for so long with my thigh injury that it did something to the left TKR, because my knee didn’t start hurting until 3 months after the injury in October. But everyone, through all the imaging tests, said my TKR looks great. I even saw the pics and it looks perfect to an unskilled eye mind you! Any thoughts? I would hate to have a revision but I don’t know what to do at this point except continue with the injections and possibly ablation.