Table 3.

Comparison of Perioperative Data Between OFD and PEID Groups

	OFD	PEID	P-value
Operation time (minutes)	70 (27–116)	75.5 (29–174)	0.16
Length of incision (cm)	4 (4–7)	1.0 (0.8–1.1)	<0.0001
Hospital stay (days)	7 (5–52)	5 (2–14)	<0.0001

Note: Data are presented as median and range.

Abbreviations: PELD, percutaneous endoscopic lumbar discectomy; OFD, open fenestration discectomy; PEID, percutaneous endoscopic interlaminar discectomy; HLDH, huge lumbar disc herniation; VAS, visual analog scale; mJOA, modified Japanese orthopedic association; ODI, Oswestry disability index; CT, computed tomography; MRI, magnetic resonance image.