Suprapedicular Circumferential Opening Technique of Percutaneous Endoscopic Transforaminal Lumbar Discectomy for High Grade Inferiorly Migrated Lumbar Disc Herniation

Table 1

Pre- and postoperative VAS (leg).

		Preoperative		Postoperative		value
		Mean	(±SD)	Mean	(±SD)
VAS		7.36	±0.73	1.45	±0.60	<0.001

.