In laminectomy the complete vertebral arch is removed at the stenotic spinal level. Due to age related changes the nerves in the spinal canal are pinched and cause pain/paraesthesia in the lower limb. Laminectomy removes part of the bone and relives the nerves of the spine. An experiences spine surgeon can either do a conventional laminectomy or opt for the newer types of laminectomy such as unilateral laminotomy, bilateral laminotomy and split spinous laminotomy. The advantages of newer treatment options include similar post op results with less removal of lesser amount of bone. It also preserves the muscles and ligaments of the spine.