Percutaneous Endoscopic Transforaminal Discectomy versus Conventional Open Lumbar Discectomy for Upper Lumbar Disc Herniation: A Comparative Cohort Study

Table 3

Therapeutic effects and modified MacNab criterion assessments of the two groups.

	PETD group	Open group	value
VAS (lower back pain)
Preoperative			0.810
Final follow-up			0.139
VAS (sciatica)
Preoperative			0.603
Final follow-up			0.484
ODI scores
Preoperative			0.406
Final follow-up			0.080
Modified MacNab			0.719
Excellence	11	9
Good	8	10
Fair	2	1
Poor	0	1

PETD group: patients with upper lumbar disc herniation who underwent percutaneous endoscopic transforaminal discectomy (); open group: patients with upper lumbar disc herniation who underwent conventional posterior lumbar discectomy and internal fixation ().