Laminectomy is a surgical procedure for treating spinal stenosis by relieving pressure on the spinal cord. The spinal cord is made up of vertebrae. Laminectomy is performed to remove the part of the vertebra called the lamina. The removal or trimming of the vertebra widens the spinal canal to create more space for the spinal nerves thereby taking pressure off the nerves in either the back or the neck.
One of the most common reasons for laminectomy is a prolapsed or herniated intervertebral disc. If the herniated disc is in the lumbar region, this can cause sharp and continuing back pain, a weakening of the muscles in the leg, and some loss of sensation in the leg and foot. It may also be difficult to raise the leg when it is held in a straight position. A herniated disc in the neck region can cause symptoms including pain, numbness and weakness in the arm. A herniated disc may be triggered by, for example, twisting the back while lifting something heavy. The surgeon will attempt to relieve the pressure on nerves and nerve roots by removing the pulpy material that is protruding from the disc.
What are cervical and lumbar laminectomies?
Laminectomies are named depending upon the vertebrae involved. When the procedure is performed on the neck it is called cervical laminectomy as the cervical vertebrae are involved. Cervical laminectomy is most often performed for a trapped nerve (as may happen for example, in arthritis of the neck).When it is performed on the lower back affecting the lumbar vertebrae, it is called a lumbar laminectomy. This procedure is often performed for disk protrusions, which may occur after a major accident but also sometimes occur after a quite minor twisting injury of the lower back.

