I’m sorry that you are so discouraged at 2 months post op. What we read about recoveries from partials does not always match up with our real life individual recoveries. I was shocked by my recovery, and I do agree with you, I feel I jumped in too fast to have my partial, because my knee hurt. I was not bone on bone, and pain did not wake me up at night.
However, I will say, I am much better now, than I was at 2 months post op. My knee, including ROM, continued to improve well into my second year, as my whole leg continued to relax and heal. At 2 months post op, where you are now is not where you will end up. You have lots of time to improve, it just won’t happen as quickly as you would like, or was expecting.
I’m really surprised they are talking MUA if your knee can bend as far as 112, even if it is not consistent, or done by yourself. There really is a lot of soft tissue that is disrupted during this surgery, even with a partial, and that all takes time to heal, which can limit your ROM until it does heal. And personally, I think reaching 112 at 2 months is great!
I was just as discouraged as you, at 2 months post op, because, like you, I thought PKR was a piece of cake surgery and recovery would be close to complete by now. It took me a long time to adjust my expectations and accept my reality. I hope in time you’ll feel this surgery was a success.