Surgical approach (number

of cases)

JOA score for Mild injury

JOA score for Moderate injury

JOA score for severe injury

Before Operation

Three months after surgery

6 Months

12 Months

Before Operation

Three months after surgery

6 Months

12 Months

Before Operation

Three months after surgery

6 Months

12 Months

Anterior surgery (32)

9.34 ± 2.13

12.31 ± 0.89

17

17

7.15 ± 1.23

12.16 ± 1.07

16.27 ± 0.64

17

5.56 ± 1.26

6.02 ± 1.16

Posterior Surgery (22)

9.78 ± 2.25

12.85 ± 1.44

17

17

6.96 ± 0.58

11.89 ± 1.44

16.64 ± 0.59

17

5.82 ± 1.45

6.56 ± 1.02

Anterior and posterior Surgery (21)

6.23 ± 0.48

11.56 ± 1.02

16.55 ± 0.36

17

2.92 ± 0.34

7.21 ± 1.62

10.52 ± 1.26

14.05 ± 1.92