Fig. 2From: One-hole split endoscope versus unilateral biportal endoscopy for lumbar spinal stenosis: a retrospective propensity score studyImages from a patient treated with OSE technique. A–C Preoperative MRI and CT showed L3-4 segment disc herniation with spinal stenosis; D–F Postoperative MRI and CT showed removal of the disc herniation, and adequate decompression of the spinal canalBack to article page