Hi 22 Year Ago Feel On A Icy Day ,

Hi 22 year ago feel on a icy day , my whole leg came black even under my toenails with last about one and half month before it disappear, from that just below the knee a lump the size of half a baseball that stii is there , the pain in constantly and make my leg feel like I'm dragging a bag of sand . Went to doctor ,specialist ???????now telling me knee replace !! l keep saying the pain I think comes from the muscle ,tendon , or nerve ...... no one is listening