Hi , what is the laminectmy?

Spinal surgery: Laminectomy is surgery to remove the lamina — the back part of the vertebra that covers your spinal canal. Also known as decompression surgery, laminectomy enlarges your spinal canal to relieve pressure on the spinal cord or nerves.

Laminectomy: Is the removal of the posterior covering of the spinal canal. This can be done in the cervical (neck-), thoracic (chest-), or lumbar (lower back) area. Typically done for nerve compression and/or stenosis.