Wow Jim363 I would immediately change pt. I had a similar situation where I had an aggressive therapist pressing my knee to get to 0 extension other exercises to improve my bend and I developed a condition called "angry knee syndrome" or synovitis. I switched pt and my knee calmed down. My therapist told me that the technique they were using is old school and new research is showing that it is not effective for some people. But I am 2 and ahalf years out from my TKR and my ROM is around 100 and stairs without a banister is a nightmare. My knee is still swollen which effects my weak quad muscle and if I over do it, it makes it worse. So it is this delicate balance I have to maneuver. I am open to trying more than just pt . . . any suggestion???