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

Table 3

Comparison of follow-up outcomes in group A and group B.

	Group A	Group B	P Value
VAS of low back
Preoperative	5.41 ± 2.24	4.98 ± 2.02	0.275
1 day	2.38 ± 1.40	2.50 ± 1.36	0.636
3 months	2.00 ± 1.08	1.85 ± 1.15	0.466
7 months	1.53 ± 0.96	1.38 ± 0.96	0.394
VAS of leg
Preoperative	6.14 ± 1.86	5.67 ± 1.50	0.132
1 day	2.07 ± 1.21	2.30 ± 1.25	0.311
3 months	1.83 ± 1.11	1.93 ± 1.06	0.597
7 months	1.33 ± 1.11	1.22 ± 1.14	0.594
ODI
Preoperative	58.97 ± 17.79	55.80 ± 14.66	0.293
1 day	19.83 ± 6.59	18.87 ± 5.54	0.392
3 months	16.86 ± 4.76	16.30 ± 4.97	0.531
7 months	12.83 ± 5.83	13.37 ± 6.88	0.648
MacNab criteria†
7 months	35:16:6:1	30:20:8:2	0.249

Compared with preoperative, P<0.05.
†Excellent: good: fair: poor.
VAS: visual analog scale, ODI: Oswestry Disability Index.