I am so frustrated! I notified my MD today that I prefer to have an autograft from my iliac crest; however, he is really trying to get me to accept an allograft from a donor. I am having a two-level fusion on Thursday. He says it is my choice. For personal reasons, I would prefer to use my own bone. As an RN, he is trying to make me see the 'scientific' reasons for having an allograft, but my gut is telling me not to... how can I explain this to him?