I’m young for TKR too, and mine is 1-1/2 yrs old. My chronic swelling developed sooner (at 8 months) though and is progressively worse. It started as localized bumps by kneecap and now has engulfed the front of the knee, including quads, and stays hot. My surgeon’s office did its own X-rays at regular intervals post-op, and results were always that the replacement was fine and that I had chronic swelling. They swore an MRI of a TKR would show nothing but distortion(?!) and that there were no other imaging options. I was told swelling was expected for up to year, but at one year checkup was told swelling can last longer. At 18 months I was dismissed bc my ROM was what they wanted. They seemed not to care about chronic swelling or pain. I did extra PT but was dismissed bc again I passed their tests. Now my knee is most certainly inflamed imo and my ability to walk is diminished like yours, and my functioning is steadily more limited, not to mention chronic pain.
Now guess what?-my surgeon has disappeared. I have a referral to a new ortho surgeon outside of the original medical group. (I’m supposed to get other knee done; I have AVN— bone death.) Will post what second opinion states. I suspect a problem that original office was covering up. Needless to say, I’m hesitant to do other TKR based on this experience. I think there’s a possibility that my knee bursa became infected and now I have bursitis elsewhere too…..