Table 2.

The real and ideal trajectories for the S2AI and the AI groups

	S2			AI
	Ideal	Real	p	Ideal	Real	p
Sag angle	31.4 ± 5.0	31.5 ± 5.7	0.929	31.3 ± 6.7	31.7 ± 6.2	0.841
Tsv angle	31.1 ± 3.0	43.4 ± 6.2	2.40E − 10**	31.5 ± 4.4	37.9 ± 10.5	0.003**
Max-length	132.4 ± 1.2	110.3 ± 1.7	3.12E − 08**	131.7 ± 1.2	120.8 ± 1.1	0.02*
Sacral distance	3.1 ± 1	26.2 ± 3.8	5.23E − 16**	3.4 ± 1.8	0.0 ± 0.0	0.08
Iliac width	15 ± 2.5	11.7 ± 3.3	1.00E − 07**	15.4 ± 1.6	13.0 ± 0.5	0.03*
S2 midline	37.6 ± 6.5	28.7 ± 1.8	8.30E − 08**	37.9 ± 6.7	37.8 ± 4.2	0.944
Skin distance	41.6 ± 11.9	45.5 ± 11.3	0.202	41.3 ± 8.9	44.1 ± 8.5	0.094
Iliac wing	0.25 ± 0.26	10.3 ± 0.63	1.00E − 06**	0.23 ± 0.23	0.1 ± 0.19	0.084

^*Statistical significance p < 0.05

^**Statistical significance p < 0.01