Have another orthopedist - one skilled in revisions - do a joint aspiration. I complained for 5 years about my knee replacement pain. Finally, when I became ill with a fever and body-wracking chills and sudden excruciating pain in the knee - 5 years after the TKR, a new orthopedist took it seriously. My prosthesis is aligned and mechanically functional. But I have a slow growing indolent bacterial infection that now requires revision. I hope you do not have an infection, but insist that this be investigated. And be better. Healing wishes for you ( and me!)