Fig. 1From: Efficacy of lumbar decompression under large-channel spinal endoscope in elderly patients with segmental lumbar spinal stenosisIntraoperative image of a typical lumbar spinal stenosis patient. a for the establishment of large channels; b for bone decompression under microscope grinding and drilling; c indicates adequate contralateral decompression at the L4/5 segment; d indicates adequate ipsilateral decompression at the L4/5 segmentBack to article page