Evaluate the clinical outcome of lumbar spinal canal stenosis treated by microendoscopic decompressive laminotomy with facet-preserving technique.
评估保留小关节镜的显微内窥镜减压开胸术治疗腰椎管狭窄症的临床效果。
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Objective:To study the technique and extensive indications for lumbosacral nerve root decompression using the MicroEndoscopic Discectomy (MED) System.
目的：探索扩大脊柱后路显微内窥镜间盘切除（MED）系统腰骶神经根减压术适应证的技术。
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[Objective]To evaluate the clinical outcome of lumbar spinal canal stenosis treated by microendoscopic decompressive laminotomy with facet-preserving technique.