Table 2.

Radiologic assessment of the AS patients with low PI (≤50°)

N = 7	Preoperative	Postoperative	p value
PI (°)	45.6 ± 5.2 (36–50)	47.1 ± 5.8 (38–50)	NS
SS (°)	13 ± 9.4 (0–28)	22.1 ± 7.5 (12–32)	0.002
PT (°)	32.7 ± 8.4 (22–47)	26.1 ± 7.8 (15–38)	0.003
C7T (°)	72.3 ± 6.7 (66–88)	86.4 ± 5.7 (77–95)	0.0025
SSA (°)	90.3 ± 7.6 (80–100)	108.6 ± 9.5 (98–120)	0.003
KTA (°)	74.3 ± 7.7 (65–90)	81.4 ± 6.7 (74–97)	0.003