Table 6 Radiographic outcome at final follow-up

ROM (°)^a

Operated level

3.7 ± 1.4

0.6 ± 0.6

<0.001

L1–S1

15.8 ± 4.7

13.6 ± 3.4

<0.001

Anterior disc height (mm)^a

Operated level

12.8 ± 2.2

11.7 ± 2.2

0.001

L1–S1

57.0 ± 4.9

56.2 ± 4.9

0.267

Posterior disc height (mm)^a

Operated level

8.3 ± 1.6

7.5 ± 1.3

<0.001

L1–S1

37.9 ± 6.5

37.0 ± 4.5

0.281