I just joined this group; looking forward to reading the discussions. I had a TKR a year and a half ago. Two months after the surgery, I developed a Baker's Cyst. It was drained twice, with no results. Seven months after surgery, I had arthroscopic surgery to try to drain it, and manipulate scar tissue. It seemed to work, but two weeks later, back to swelling behind the knee. I now have only a 90 degree bend, it's always swollen, and sometimes quite painful. I had a TKR on the other knee a year before the second knee, and it only has a 90 degree bend, too. Very frustrating. I had extreme pain with both knees, and couldn't/didn't do the therapy that is required. I'm wondering if scar tissue can still be broken up, if I get really aggressive with massage, exercise, etc.? Would appreciate any comments. Thanks!