Table 3.

Changes in radiologic parameters between postoperative day 1 and 3 months

	Group A	p	Group B	p
SL	0.6 ± 4.3	0.106	2.6 ± 3.4	0.019*
Disc height	0.4 ± 3.2	0.622	1.6 ± 2.0	0.061
Screw angle	0.4 ± 3.7	0.718	2.5 ± 2.1	0.005*
L4 Screw angle	0.8 ± 2.4	0.899	1.2 ± 2.6	0.164
L5 Screw angle	–0.3 ± 2.5	0.613	1.5 ± 2.5	0.084

SL: segmental lordosis, mean ± standard deviation,

^*p < 0.05.