I had a right TKR three years ago this July. Knee has always continued to be painful. I have been back to the surgeons complaining of pain 3-4 times and he says he doesn't know why it hurts. He has recommended Tylenol, straight leg raises, Meloxicam. So has anyone had continuous pain, even though the xrays look great? We are now talking about replacing the left knee and he has said I might do something different to prevent the problem you are having with right TKR. Which implies of course, he does have an idea of what's wrong! I've been wondering if too much range of motion is too much of a good thing. I have so much bend in my knee even the surgeon is astonished.