I don't know the answer, but swelling is slow to decrease when you have to sit for such long periods. Is there any chance you could work from home and find a way to either use a recliner or otherwise get some elevation for the knee, take more frequent walking breaks, and ice?

Without other info, that sounds like the issue. Fortunately I was retired when I had my knees replaced. I wish you all the best.

Hi. I’m also five months out and still have swelling and my knee area is always warm. I do feel some tightness and stinging pain a couple times a day on the lateral side of my knee.
I may start a discussion thread as I’m beginning to think I should be farther along now. And I also was told a year.
Wish you the best and a pain free future!