Four years ago I had a TKR followed by MUA six weeks later. Doctor said “it bends” after manipulation and showed me video. Had PT for 16 weeks. Knee stayed swollen, scar tissue took over, ROM went from 35 to 20 over 4 years. Fast forward - New surgeon discovered original implant was defective & ill fitting. He performed Revision TKR Nov 22’. It took an hour just to remove scar tissue! Had MUA 4 weeks later with ROM at about 60 (to get ahead of repeating scar tissue build up again). No nerve block with manipulation- whew worst pain ever - all in quad. PT daily for 3 weeks following MUA…then 3 x week. Then 2 x week. Now finished 15 weeks total of PT. Used pain meds during PT for several weeks, eventually just needed muscle relaxer and not even that the final 2 weeks. Knee swelling subsided gradually with elevating & icing several times a day. Biggest challenge in PT besides learning to walk normally was getting quad to fire up and then stretching it out after years of not using. Putting heat on thigh - then letting it dangle from side of massage table while letting gravity do its job and massaging thigh helped in PT. I started out using a rolling pin at home to massage thigh area, now using a tennis ball to massage which has helped immensely. I have massage table at home so still using it to dangle/stretch quad. My ROM is 80 and getting better (my new surgeons goal was getting me to 90 degrees). I know 80 not optimum but I feel so much better. I walk normally and can go up/down stairs (with bannister or handrail) normally. I’ll take it - while continuing to do the exercises & massaging. It takes a while to get through the healing, but perseverance and determination not to go back to where I had been helped. My PT’ s were great and bounced ideas off each other, along with my input on what I needed all helped get me where I am. Seems no two stories found on this forum are same but hope you get some useful info, some answers & mainly relief.