I'm so sorry about your os. It would certainly leave a "bad taste" in my mouth too. I went against the recommendations and instead of choosing the ortho who was supposedly the best in town (and could not put both feet into the exam room) and did hundreds a year I went with the 34 yr old newbie who worked for an nfl team and did one knee per week (he specializes in shoulders). Unlike other docs he wants to see me every 3 months for the first year and before surgery when I mentioned a sliver gives me problems and an infection and it worried me he said it worried him also. I would go for another doc who cares and hears what is going on with your knees and what your concerns are. So far, my tkr has been really perfect but I am not quite 4 months out and as I read on here problems can come quite awhile after surgery.
I really hope you get some resolution. From experience (and incorrect diagnosis over the years) I really believe we know our own bodies better than any doctor. Keep searching until you have a doc who will find out what is going on with your tkr. Good luck. I will say prayers for you.