Fig. 2From: Early efficacy observation of the unilateral biportal endoscopic technique in the treatment of multi-level lumbar spinal stenosisTypical case A–E showed CT and MRI examinations of the lumbar spine before surgery. Arrows showed L3–L5 lumbar spinal stenosis area.The arrows in (F) and (G) show the decompression area during the postoperative CT examinationBack to article page