Posterior cervical fusion is done through the back of the neck. The surgery joins two or more neck vertebrae into one solid section of bone. Posterior cervical fusion often treats neck fractures and dislocations, and fixes deformities in the curve of the neck. The goal of spinal fusion is to stop the motion caused by segmental instability. This reduces neck pain caused from too much motion in the spinal segment. A bone graft is placed on the back surface of the problem vertebrae. The vertebrae grow together, creating a solid piece of bone. Surgeons sometimes attach metal hardware to the neck bones during posterior fusion surgery.