Table 2 Results of VAS and ODI score

Preoperative

6.2 ± 1.8

6.8 ± 1.8

57.7 ± 15.5

Three days after operation

3.1 ± 1.5^*

1.7 ± 1.2^*

-

Three months after operation

1.8 ± 1.2^*#

1.4 ± 1.2^*

27.6 ± 11.1^*

Six months after operation

1.6 ± 1.3^*#

1.4 ± 1.3^*

25.1 ± 8.8^*

One year after operation

Two years after operation

1.4 ± 1.4^*#

1.1 ± 0.9^*#△

1.2 ± 1.0^*#

0.9 ± 0.8^*#△▽

19.1 ± 8.6^*△▽

13.8 ± 5.8^*△▽⊿

P

0.000

0.000

0.000