Table 6 Radiological results

Duration of radiological follow-up (months)

10.2 ± 7.8

9.5 ± 5.3

7.8 ± 3.0

0.491

 Preoperation

32.2 ± 4.1

29.4 ± 4.0

30.9 ± 4.1

0.165

 Immediate-postoperation

33.5 ± 4.0

33.6 ± 3.1

34.4 ± 4.9

0.792

 Final imaging follow-up

33.4 ± 3.8

30.1 ± 4.5

31.9 ± 4.7

0.136

Subsidence rate

0.0%(0of18)

6.3%(1of16)

53.3%(8of15)

0.000

Brantigan score

4.6 ± 0.8

4.0 ± 0.7

3.1 ± 1.1

0.000

Fusion rate

100%(18of18)

100%(16of16)

73.3%(11of15)

0.000