A laminectomy is a surgical procedure performed on the spinal column which removes a portion of the vertebral bone called the lamina. It is practiced in cases of compression of the spinal cord
as in some herniated discs, lumbar spinal stenosis, or other compression disorders. All the compression disorders of the spinal cord or of a nerve passing nearby can cause pain
which can be very debilitating in everyday life. A laminectomy enables the removal of hernias or growths, or the lifting of the compression phenomenon in hopes of a reduction or complete elimination of symptoms. In some cases, however, even despite an operation performed correctly, the clinical signs may persist.