Fig. 7From: Functional outcomes of full-endoscopic spine surgery for high-grade migrated lumbar disc herniation: a prospective registry-based cohort study with more than 5 years of follow-upL5–S1 IELD for L5–S1 high-grade downward migration. a Preoperative MRI lateral view showing L5–S1 high-grade downward migration. b Intraoperative endoscopic view of the migrated disc. c Intraoperative fluoroscopic image of the probe at a high-grade migrated disc. d Postoperative MRI lateral view of the removed migrated disc. e Removed discBack to article page