Have you been diagnosed with a slipped disc in your back and your doctor recommended surgery? Spinal fusion is a procedure to stabilize the spine when arthritis has led to instability of the spinal segment (2 bones around the disc). This procedure is usually done along with a laminectomy to relieve the pressure on the spinal nerves. Patients with mechanical low back pain and pain in the legs when standing or walking, may benefit from this procedure. Screws and rods are placed around the spine for stability along with bone graft for the fusion.