@njpahl I can do a fairly decent squat but if I try to kneel I can't bend enough to be stable, I have to hold onto something.

There is no way in the world that I can do "quad stretches (heel to butt)" as @coffeecraz can. I am fairly active, exercise daily, but that is beyond me. I am 4 years out from my second TKR so it's not going to happen. My orthopedic doctor told me he could get me a little bit more flex with a lysis procedure but I just don't want the bother of another surgery, even though it is minor. I believe it would require rehab.
JK