Traditional laminectomy completely exposes the lumbar spinal canal with spinous process and lamina osteotomy , which usually causes postoperative lumbar spinal instability and scar tissue adherent.

• 传统的全椎板切除减压术,椎管开放后造成腰椎不稳定、硬脊膜外瘢痕粘连而引起手术效果不理想。