I had total knee replacement in 2010 and the right knee was done 6 months later than the left knee but now I am having pain in my right hip and after having X-rays done I also have bird perks in my hip also ,now my right knee hurts and I am lipping ,it appear that my right leg is shorter than the right ! And I stay in pain with the right knee ,it s really unbearable if I am walking in stores with concrete floors is this normal the pain is so unbearable but my surgeon said I need to loose weight before hip surgery but why ? And he haven t said how much weight !