Long break here without much going on, but I thought I should check in at the six month mark, which was yesterday. Before I left therapy a few months ago, I got to 145 degrees, which is only 4 degrees less than my non-surgery knee. I don't think things have changed much, maybe a little. I still do my knee exercises three times a week; not very hard anymore. Mostly riding on the bike at home, sometimes outside, and doing light weights and bands. If you were to watch me walk, you would not see any knee issues, I'm pretty sure of that. I don't try to run! And kneeling is still not comfortable, although I can use my non-surgery knee to get up and down. Other than that, if I lie on my back with my leg straight up at a 90 deg angle, and then slowly bend it, I can feel a slight catch as it gets toward the bottom. This has been improving so I have hope it will go away. I still massage my knee and the scar; I still have a small amount of numbness, but that too has improved a lot. I have long had left-body pain (after a rib cartilage inflammation almost 40 years ago, which caused a tight knot in the back that only goes away with dry needling, but reappears after three days); the knee surgery has exacerbated that tightness and pain. It took me a while to associate it all, but it has been true that any "injury" to the left side causes systemic pain on that side. I supposed knee surgery is an injury. So now I stretch two or three times a day, and take muscle relaxants at night. That has worked pretty well.
Overall I am happy with my knee, and think it will continue to improve. I read some of the questions and comments here and realize I have been very fortunate. I hope everyone finds relief from pain from their surgeries.