Structural Preservation Percutaneous Endoscopic Lumbar Interlaminar Discectomy for L5-S1 Herniated Nucleus Pulposus

Table 4

Clinical results—VAS.

	Preoperative		Postoperative		value
	Mean	(±SD)	Mean	(±SD)
VAS (leg)	7.91	0.73	1.15	0.62	<0.001
VAS (back)	5.15	0.71	1.19	0.75	<0.001