Table 6 Efficacy of immediate postoperative SVA to sagittal imbalance at the follow-up

Cases (n)

34

21

/

Postoperative SVA (cm)

11.5 ± 3.1

3.6 ± 2.4

 < 0.001^*

Follow-up SVA (cm)

11.4 ± 3.4

4.1 ± 3.3

 < 0.001^*

Incidence of sagittal imbalance at the follow-up

97.1% (33/34)

19.0% (4/21)

 < 0.001^*

Follow-up ODI score

24.11 ± 14.75

21.28 ± 13.16

0.553

Follow-up SRS-22 score

3.89 ± 0.50

4.04 ± 0.51

0.382