It's me again. I just love this site. Anyway my right knee is severely deformed because of my NF and scoliosis. I have been to doctors and they say I'm to young for knee replacement surgery. (41 yrs old) I also have sever arthritis in said knee. I need some advise on what to do. My knee pops if I stand for long periods of time or even if I walk a short distance. It's worse in cold weather. I don't know what else to do.