Table 3 Comparison of clinical parameters according to the postoperative intervertebral disc height change

Number of cases

47

47

–

△IDH (mm)

2.4 ± 0.9

3.9 ± 1.0

< 0.01*

3 days-Postop (mean ± SD)

 JOA

9.4 ± 3.8

9.6 ± 4.1

0.532

 NDI

29.5 ± 7.2

28.9 ± 8.1

0.374

 nVAS

4.4 ± 3.2

4.2 ± 2.8

0.141

 aVAS

3.5 ± 2.4

3.4 ± 2.5

0.482

1 months-Postop (mean ± SD)

 JOA

10.6 ± 3.7

10.4 ± 3.9

0.750

 NDI

24.2 ± 8.4

23.9 ± 9.1

0.415

 nVAS

2.4 ± 1.9

3.0 ± 2.2

0.063

 aVAS

3.2 ± 2.2

2.9 ± 2.4

0.129

2 months-Postop (mean ± SD)

 JOA

11.1 ± 2.5

11.5 ± 2.4

0.541

 NDI

19.2 ± 7.6

18.8 ± 8.3

0.241

 nVAS

1.9 ± 1.5

2.5 ± 1.9

0.084

 aVAS

2.7 ± 2.3

2.5 ± 2.2

0.157

6 months-Postop (mean ± SD)

 JOA

12.8 ± 2.9

13.6 ± 3.1

0.221

 NDI

13.2 ± 9.2

12.9 ± 8.5

0.185

 nVAS

1.7 ± 1.5

1.9 ± 1.4

0.284

 aVAS

2.0 ± 1.8

1.9 ± 1.7

0.377