Spinal Fusion Surgery is pretty safe but you should only get spinal fusion surgery done if absolutely necessary because it can actually make some back pain worse.
Some risks associated with having Spinal Fusion Surgery include,Graft site pain, Surgical site infection, pseudoarthrosis, Excessive bleeding, Nerve damage and Formation of blood clots.
Spinal Fusion surgery is pretty successful though and rarely the risks involved cause problems and the success rate of Spinal Fusion Surgery is 80%.