Laminectomy, Fusion – Instrumented
A posterior lumbar laminectomy is done to correct spinal stenosis, which is a narrowing of the spinal canal caused by degenerative conditions in the lower back. Pressure on the spinal nerves (radiculopathy) exiting the spine causes pain, and a laminectomy removes part of the vertebral lamina to reduce the pressure. After removing bone, bone grafts can be added to fuse the vertebrae. In instances where there is instability, instrumentation is added to provide greater stability to the spine.