There are different methods of fusion. Bone is typically taken from the pelvic bone or from a bone bank. The bone is used to make a bridge between vertebrae that are next to each other. This bone graft helps new bone grow. . For more information now visit:- https://plus.google.com/+DrMichaelElkanichLasVegas And Call Now (702) 228-7355 Or Contact Now 2680 Crimson Canyon Dr, Las Vegas, NV-89128