Lumbar laminectomy, also known as decompressive laminectomy, is a surgical procedure performed to relieve pressure on the spinal cord and nerves in the lower back. The procedure begins with an incision made in the midline of the lower back. The surgeon removes a portion of the lamina, the bony arch on the back of the vertebrae, to create more space in the spinal canal. This relieves pressure caused by conditions such as spinal stenosis or herniated discs. In some cases, the surgeon may also remove bone spurs or thickened ligaments. The procedure aims to alleviate pain, improve mobility, and restore normal nerve function in the lumbar spine.