Table 1 Demographic and characteristics of AS patients

Gender (F/M)

4/18

Age (ys)

39.30 \(\pm\) 12.31

Follow-up (m)

30.00 \(\pm\) 3.56

The osteotomy site

 T12

3

 L1

6

 L2

9

 L3

4

PI (\(^\circ\))

48.57 \(\pm\) 9.24

PT (\(^\circ\))

37.93 \(\pm\) 5.37

SS (\(^\circ\))

10.60 \(\pm 9\).02

LL (\(^\circ\))

\(-\) 9.95 \(\pm\) 14.14

TK (\(^\circ\))

37.27 \(\pm\) 21.49

SVA (\(\mathrm{cm}\))

19.21 \(\pm\) 5.04

OVA (\(^\circ\))

46.57 \(\pm\) 2.32