In my experience (I also had the lysis), the P.T. was not as painful as it was originally, you are working through the scar tissue and not the surgery, but, it has to be almost constant. I configured a bike of ours into a stationary bike. After the lysis, I set the timer for three hours and woke myself up every three hours and biked for 10 minutes. Had office P.T. every day and did PT at home several times a day. The knee is not perfect but can do about everything I want. Pushing hard I can get 130 degrees.