I had bilateral total knee replacement surgery 15 days back. My right knee is almost healed now, able to bend as physiotherapist suggests with very less pain now. But my left knee is still very stiff very painful, bends very less, Also I get fever spike of 100�after every physio session. I am not getting satisfactory answers from surgeon, who says that it will gradually bend. Should I be worried now? What may b the causes and remedies? Stiffness,pain and fever are the main issues. Pl help.