Author Correction: Spine Deformity (2021) 10:121–131 https://doi.org/10.1007/s43390-021-00397-1


In Fig. 4 of this article signs for points associated in all 3 components are incorrect and should be reversed, e.g. + 2 should be − 2 and vise versa; Fig. 4 should have appeared as shown below.

Fig. 4
figure 4

Method of calculation of Sagittal age-adjusted score (SAAS) using the three sagittal components. Formula used to evaluate the age-adjusted alignment targets are reported for each of the three components of the Sagittal Age-Adjusted Score

The original article has been corrected.