I had several major surgeries to my femurs. I now have a steel bar in each femur, where the bone marrow would be. I have a genetic disease called NF1. I have a rare version of it, where the tumors grow on the organs, instead of the nerves. my left leg refused to heal, so I had four more surgeries. now I have 9 scars, one Is two inches thick, one is a foot long... yeah.