@labbadia1 I don’t want to come across as ornery, but while pool exercises may not do much for the flex or straightening of the knee, it does help with everything else. And no, my PT guy may have GENTLY pushed on my knee, or bent it, but never with any kind of force, causing pain. The heel slides, towel-roll push-downs etc. will get results all by themselves. A stationary bike helps with the knee bend as well. I ended up with about 135 degrees of flex after 12 weeks, and - finally - with zero extension after about. 5 months. I’m sure JK will echo the caution regarding overly enthusiastic therapists who force the issue.
My knee replacement came 11 months after a knee repair surgery, torn meniscus, loose cartilage floating under and around the knee cap, with disappointing results. Not sure if that had anything to do with my slow progress of getting the leg perfectly straight. The last 3 degrees took forever!