Percutaneous Endoscopic Lumbar Discectomy Assisted by O-Arm-Based Navigation Improves the Learning Curve

Table 2

Comparison of clinical outcomes in group A and group B.

	Group A	Group B	P Value
Operation time (mins)	95.21 ± 19.05	113.83 ± 22.01	<0.001
Cannula placement time (mins)	36.38 ± 14.67	52.63 ± 17.94	<0.001