Jockette, I just read your story for the first time (I sped read posts other than yours, just to save some time) and I have great empathy with what you've been through.
At one year, I still wasn't sure if there was something drastically wrong. There's a long thread in my profile from 2011 where I discuss my coming 1 year checkup with Josephine. I was in great distress at the time, and in all reality, I never really was convinced I was ok even though my xrays always looked good. Anytime I saw my surgeon he was somewhat perplexed that I was unhappy with the results. I would tell him it always "felt" swollen, but it never looked swollen to him. I would tell him it was swollen on the inside, but he wasn't buying it.
It wasn't until somewhere around 18 to 24 months post-op that I had a major breakthrough. My GP took me off of Lipitor and put me on pravachol and gradually over the next two months or so, I felt myself getting much more sure that my knee was in fact fine. I literally got stronger. It's still very weather sensitive, and til this day almost 9 yrs later, I still "notice" things going on all the time. It doesn't rise to the level of pain that would affect my day, but more something that I was left with by having a second operation 3 months after my TKR.
It's funny, but people talk about a TKR getting better for a year or more. Mine has gotten better even recently as I prepare for my next one. I honestly believe now that it never stops getting better, and all that PT is best saved for way way after it's healed. Years even.
I wish you the best of luck.