Hmmm. I think I need to do some more thinking before I jump into a full knee replacement to replace my partial. My knee bend is fine, very fine. My leg is straight enough but not totally straight. And it aches from time to time.
I have a RX for PT to try (again) to build some strength.
My films do show damage to the other side of my knee that was not there when I had the first surgery done, and for two years hence.