Table 2 Preoperative and postoperative functional and radiographic outcomes status and their correlation (N = 20)

Functional outcome

 JOA score

10.1 ± 1.6

15.7 ± 1.8

−27.58

<0.001*

 Nurick score

2.6 ± 0.7

0.4 ± 0.9

15.00

0.001*

 NDI

39.9 ± 6.1

22.4 ± 3.8

−16.63

0.001*

 Neck pain VAS

6.2 ± 0.8

2.0 ± 1.3

13.28

0.118

Radiographic outcome

 Cervical curvature (degree)

−5.0 ± 3.7

9.3 ± 2.1

−8.67

<0.001*

 ROM (degree)

15.4 ± 5.4

1.0 ± 0.4

9.81

0.311