Table 2 Predictive variables

Pre-operative

Right foraminal diameter

3.93 ± 4.99

2.09 ± 1.01

0.04

Left foraminal diameter

3.91 ± 4.84

2.53 ± 0.80

0.10

Minimum foraminal diameter

3.66 ± 4.87

1.97 ± 0.75

0.05

Anterior posterior diameter

9.58 ± 3.76

7.32 ± 1.67

0.006

Right CLA

33.43 ± 10.59

37.58 ± 8.73

0.19

Left CLA

32.17 ± 7.43

36.61 ± 6.69

0.07

Neutral

11.48 ± 14.77

12.37 ± 9.59

0.82

Flexion ROM

14.77 ± 12.16

13.59 ± 11.61

0.78

Extension ROM

−22.68 ± 15.15

−25.57 ± 11.66

0.53

Ishihara Index

8.12 ± 25.03

2.54 ± 13.71

0.42

Cervical Spine Angle

8.07 ± 15.41

12.08 ± 12.77

0.36

Segmental Lordosis

0.17 ± 5.01

1.64 ± 8.06

0.54

Post-operative

Ishihara Index

−2.05 ± 6.45

3.63 ± 10.83

0.15

Cervical Spine Angle

7.82 ± 13.12

12.07 ± 13.91

0.34

Segmental Lordosis

−0.09 ± 5.22

2.45 ± 2.77

0.03