I had TKR in 2012 and woke up in worse pain. Once every week or so, something would catch on something on the outside of my knee. For 4-7 days after, the pain was excruciating. This went on for 2 years until an old Dr. at USC Keck did Orthoscopic surgery to take a look. He found a ganglion cyst and removed it. No pain relief after 6 PT sessions. Long story short, I had a Total Hip Replacement (same side) done last May and was told by Dr. that my leg was 2 inches longer than other. He adjusted it to even my legs. My IT Band was rubbing on the knee prosthesis. 4 months of daily PT on hip muscles. 9 months later and it's finally feeling a little better. Going to ask Pain Dr. to get some PT on my IT Band. 13 years of extreme pain hopefully will finally improve. Just had injections in my other hip today. Ready for some PT. I'll never give up. Hate Pain Pills!