went back to ortho dr who did my TKR. He said I have a 5 degree extension curvature. So I guess this is why I still have pain 15 mos. post op. He wrote me a script for PT but not sure if insurance will help or if PT can correct it. I have used a pillow under my knees for years because of my back. No one told me not to. I guess this is what caused it. I'm trying to exercises at home to correct it but i think I.m screwed.