I am having surgery on my neck due to herniated disc and spurs from C-3 down to C-7. The doctor said that using my own bone from my hip would really hurt. He also said that any kind of therapy would not help my situation since i have already lost muscle strenght and over time would lose more if surgery is not done. Is cadaver bone safe? He said that it was screened and tested but it still bothers me to think that i would have part of a dead person inside me. Any help would be appreciated with this.