Figure 1.

The postural balance parameters of C7PL, GCB, AT, CPT, CSVL, TC, LC, TK, LL, SVA. In (A), the assessment of coronal balance. Line A (GCB) stood for the width between the central sacral vertical line (Line C, CSVL) and the mid-C7 vertebra plumb line. Line B stood for Apical translation of the major curve (AT) is measured as the offset between the center of the apical vertebra of the major curve and CSVL. Line D connected the highest point of the iliac wing on two sides, and CPT was the intersection of this line and the horizontal line. (B,C) Showed the parameters of TC, LC, TK, LL, SVA.