Table 3.

Comparisons of three groups in the sagittal plane

	Group T9–10 (n = 22) (UIV = T9 or 10)	Group T11–12 (n = 10) (UIV = T11 or 12)	Group L1–2 (n = 19) (UIV = L1 or 2)	p value
Age (years)	64.6 ± 7.9	63.3 ± 6.0	65.3 ± 4.5	0.73
No. of fused vertebra	7.5 ± 0.6	5.9 ± 0.7	3.9 ± 0.6	0.00
Thoracic kyphosis (°)
Preop	11.6 ± 16.9	11.8 ± 13.7	15.0 ± 8.7	0.67
Final	14.6 ± 10.7	12.4 ± 10.1	13.2 ± 9.0	0.83
Change	3.3 ± 10.9	1.7 ± 11.7	−1.8 ± 9.2	0.39
Thoracolumbar kyphosis (°)
Preop	6.7 ± 5.8	6.0 ± 3.9	7.4 ± 4.8	0.87
Final	5.9 ± 6.1	8.4 ± 10.4	14.2 ± 11.1	0.02
Change	−1.0 ± 9.2	3.5 ± 10.9	6.8 ± 11.5	0.12
Junctional kyphotic angle (°)
Preop	3.3 ± 2.7	5.0 ± 3.9	2.2 ± 5.7	0.44
Final	5.9 ± 6.1	9.7 ± 8.4	7.8 ± 10.6	0.34
Change	3.1 ± 6.1	5.6 ± 8.2	6.0 ± 9.6	0.29
Lumbar lordosis (°)
Preop	22.0 ± 15.3	27.2 ± 12.7	29.4 ± 12.7	0.24
Final	20.4 ± 10.2	25.3 ± 9.7	23.2 ± 13.1	0.51
Change	−1.6 ± 12.5	−2.0 ± 11.2	−6.2 ± 10.5	0.42
Sagittal C7 plumb (mm)
Preop	59.6 ± 33.2	46.5 ± 34.5	38.9 ± 30.2	0.15
Final	99.1 ± 43.8	58.7 ± 29.6	58.5 ± 26.0	0.01
Change	39.5 ± 31.9	12.2 ± 36.2	19.3 ± 9.2	0.06
Pelvic incidence (°)	60.7° + 9.6°	59.4° + 9.1°	57.2° + 8.9°	0.25