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Table 3 Comparison of VAS and ODI scores between the two groups

From: A real-time 3D electromagnetic navigation system for percutaneous transforaminal endoscopic discectomy in patients with lumbar disc herniation: a retrospective study

Characteristics

EMN (n = 32)

C-arm (n = 47)

P value

VAS of Back

 Preoperative

5.41 ± 0.98

5.74 ± 1.07

0.16

 1 month

2.31 ± 0.78

2.17 ± 0.84

0.45

 3 months

1.84 ± 0.77

1.98 ± 0.77

0.44

 6 months

1.47 ± 0.67

1.66 ± 0.70

0.23

 12 months

1.50 ± 0.62

1.43 ± 0.71

0.63

VAS of Leg

 Preoperative

6.47 ± 1.11

6.64 ± 1.28

0.54

 1 month

2.16 ± 0.63

2.26 ± 0.67

0.51

 3 months

1.75 ± 0.72

1.83 ± 0.73

0.63

 6 months

1.53 ± 0.67

1.47 ± 0.78

0.71

 12 months

1.22 ± 0.71

1.26 ± 0.74

0.83

ODI

 Preoperative

56.81 ± 8.11

58.89 ± 9.73

0.32

 1 month

22.50 ± 4.49

23.74 ± 6.81

0.37

 3 months

16.19 ± 4.55

17.15 ± 5.24

0.40

 6 months

12.89 ± 3.63

12.21 ± 3.76

0.44

 12 months

11.81 ± 3.68

10.81 ± 2.88

0.18

  1. VAS visual analogue scale, ODI Oswestry Disability Index