@tacaropat Before you think about revision surgery, one suggestion I could make is look at the possibility of an immune response to the implant materials as a source of the pain. There is a lab in Chicago that tests for implant material hypersensitivity. https://www.orthopedicanalysis.com/ I think I have a reaction to titanium plates I have on my ankle because of an ankle fracture a year ago. I have chronic hives and have to keep taking antihistamines to keep that at bay.

If you are having a reaction to your artificial knee, there are environmental allergy medicine doctors who treat this. You can search for a provider at https://www.aaemonline.org/. The blue provider search button is in the upper right corner on the main page. The practice that fathered this field of medicine is the Environment Health Center in Dallas. Their website mentions treatment for implant sensitivities and they have medical teaching volumes written for doctors. Here is the link. https://www.ehcd.com/