question: I have had left knee replacement done twice, the last time being Feb. 2013. My knee still hurts when walking or standing and my lower leg and ankle area swell and hurt a lot. Also my left leg hurts down the front part of my leg into the ankle area. It is hard to walk or stand for any length of time due to the pain. What might be the cause and what can I do to help alleviate the pain. Even at night in bed, my unoperated leg aches like crazy.