I, too,was very active, 66 at first tkr. I had a bike accident about 8 years ago. Those revision surgeries are a beast! The first tkr showed up on X-ray as a patella tracking laterally. First surgeon did a MUA at 6 weeks, but chronic inflammation (along with the bike trauma and very bad physical therapy) caused scar tissue. After 1 year, new surgeon did the revision and removed a ton of scar tissue, but scar tissue did not stop growing, it just got worse. So, another year and a sports ortho did laporascopic scar tissue removal. I’m now 6 weeks out of that surgery. Yes, I can tell that restriction has been removed, but on rainy days I am in misery. It swells internally and scar tissue feels like tight piano wires wrapped around my knee, front and back. NO painkiller, muscle relaxant, ointment, heat, cold, menthol, elevation, etc., does any good. As I have said, medical marijuana is the only thing that helps me to calm down and fall asleep. When pain will not allow me to find ANY comfortable position, there is no way to fall asleep. MM does help. I am in outpatient PT , do home PT everyday, and pedal a stationery recumbent bike everyday (4x for 15 minutes each). I have asked my recent surgeon for cortisone injection, metformin trial, anything to stop the increase of scar tissue. They will do nothing. I am looking into EPAT but I think it won’t be strong enough to make a difference. If anyone has any ideas, please, please, please. Sadly I think we are all in the same boat.