Table 1.

Comparison of pre- and post-operative Cobb angles and global sagittal radiographic parameters in degrees

	Preoperative average ± SD	Range	Postoperative average ± SD	Range	t test
Thoracic Cobb	59.8 ± 16.1	36–104	21.2 ± 13.5	0–70	p = 0.0001
Lumbar Cobba	50.4 ± 15.9	28–88	20.2 ± 14.8	0–53	p = 0.0001
T4–T12 kyphosis	28.2 ± 13.3	7–58	26.1 ± 10.8	9–61	p = 0.066
L1–S1 lordosis	49.9 ± 12.3	16–72	47.7 ± 10.3	22–69	p = 0.154
T1 tilt	3.2 ± 3.0	0–16	3.6 ± 2.4	0–11	p = 0.419
T9 tilt	6.0 ± 4.3	0–17	5.8 ± 4.0	0–18	p = 0.808
Pelvic incidence	49.3 ± 10.7	23–74	49.5 ± 11.1	20–75	p = 0.708
Pelvic tilt	8.7 ± 5.9	0–24	10.7 ± 6.6	0–30	p = 0.070
Sacral slope	40.4 ± 7.9	21–62	38.6 ± 8.9	16–56	p = 0.740

^aMeasured for double major curves type Lenke 3 only