Treatment of Lumbar Disc Herniation Combined with Lumbar Spinal Stenosis of the Elder with Enlarge Undercutting Laminae Decompression in Bilaterally and Myelin Nucleus Resection

• 双侧潜行扩大开窗髓核摘除术治疗老年人腰椎间盘突出合并椎管狭窄症