Table 3 The clinical outcomes of the two groups

VAS back pain

 Preoperation

4.50 ± 1.23

4.23 ± 1.19

 Postoperation

1 week

2.17 ± 0.69^*

3.33 ± 0.65^*

1 month

1.77 ± 1.83^*

2.10 ± 0.48^*

3 months

0.87 ± 0.63^*

1.63 ± 0.72^*

6 months

0.67 ± 0.55^*

1.13 ± 0.35^*

12 months

0.53 ± 0.51^*

1.03 ± 0.49^*

Last

0.67 ± 0.48^*

1.17 ± 0.38^*

VAS leg pain

 Preoperation

6.17 ± 1.02

6.20 ± 0.96

 Postoperation

1 week

2.17 ± 0.65^*

2.53 ± 0.57^*

1 month

1.17 ± 0.38^*

1.50 ± 0.51^*

3 months

1.00 ± 0.37^*

1.07 ± 0.52^*

6 months

0.67 ± 0.58^*

0.93 ± 0.45^*

12 months

0.60 ± 0.50^*

0.63 ± 0.49^*

Last

0.53 ± 0.51^*

0.60 ± 0.49^*

ODI

 Preoperation

45.17 ± 4.96

45.90 ± 5.38

 Postoperation

1 month

22.03 ± 3.33^*

29.20 ± 4.99^*

3 month

15.10 ± 1.86^*

20.97 ± 4.49^*

6 months

11.33 ± 2.38^*

13.23 ± 3.46^*

12 months

9.97 ± 2.27^*

9.90 ± 3.31^*

Last

10.1 ± 2.36^*

9.73 ± 3.10^*

Satisfaction rate (%)

96.7

96.7

1.000^**

Excellent

5

9

Good

24

20

Fair

1

1

Poor

0

0