Table 2 Comparison of pre- and postoperative VAS, JOA and ODI scores

Pre-operation

6.18 ± 1.54

6.45 ± 1.29

12.55 ± 1.57

60.09 ± 5.61

 2 d

2.09 ± 1.14

1.63 ± 0.81

16.09 ± 1.04

21.36 ± 6.99

 3 m

1.91 ± 0.94

1.55 ± 0.82

16.18 ± 1.40

20.91 ± 7.03

 6 m

1.82 ± 1.08

1.45 ± 0.93

16.27 ± 1.74

20.27 ± 7.46

 12 m

1.73 ± 1.10

1.36 ± 1.29

17.91 ± 1.92

18.64 ± 6.50

F

101.746

146.988

25.996

357.215

P

P < 0.001

P < 0.001

P < 0.001

P < 0.001