Has anyone had swelling, burning, and pain 8 months after TKR surgery?

I have had 3 knee replacements on same knee and 2 surgeries on my knee cap on the same knee. I am in a lot of pain. The last knee cap surgery was June 2025

I’m not a physician, just a fellow patient, but I’ll just tell you my story. My surgery was in October 2024. I had a slower recovery than other people reported. I had serious pain for seven months, after which I finally felt like myself. It actually took me until now—almost two years—to be happy I did the procedure. I’m so happy, in fact, that I’m going to schedule TKA on my other knee.

My problem in the beginning was doing too much rehab, which wouldn’t have been too much for another person. At four months, I could barely move. I changed physical therapists and the new one told me to stop exercising at home and only go to rehab for a while. That helped. Then I didn’t go to rehab for a week because I had guests, and I noticed that my knee really loosened up. Once I started listening to my body, and taking the recovery much slower than other people reported doing, my knee healed better. I achieved five more degrees of flexion in the second half of the first year!

So, for a start, leave your knee alone for a good while. Stop trying to do anything that’s painful. Meanwhile, look for a physical therapist that gives you at least an hour in each visit and who does gentle manual therapy, along with heating and icing. Maybe contact the American Academy of Orthopaedic Manual Physical Therapists (AAOMPT). My second—wonderful!—PT was certified by that organization. Good luck and please report back.

Were you tested for allergies to the componets of the implant and the bone cement? I insisted of this testing before my scheduled implant surgery. I do have Allergic Contact Dermatis and am allergic to various contacts. I had previously had the 5 Day Extended Patch Test which identified various allergic contacts, but I wasn't tested for metals on that test. My ortho told me the best type of testing for metals was a blood test not the patch test. Medicare does cover the implant and surgery but not the blood test for allergies to the components. I paid $600 for this blood test that my doctors office sent off to a lab in Illinois. It came back showing allergies to 5 metals but not to the bone cement. I learned I was not allergic to titanium the metal used in the implant but the ortho told me that there is no such thing a pure titanium. Titanium contains traces of other metals.
If I were in your place I would ask your ortho about blood testing for the components in your implant. There is a ceramic coated implant which will block the metal contacts for a period of time. My ortho told me eventually the coating will wear off and metals would be exposed. I canceled my surgery and have accepted my limitations.