Table III.

Local, regional, and global sagittal parameters preoperative and at follow-up.

Variable	Preoperative, mean (SD); range	Follow-up, mean (SD); range	p-value^*
Lumbosacral parameters
Slip percentage	75 (15); 50 to 100	48 (19); 9 to 81	< 0.001
Dub-LSA,°¹¹	70 (11); 50 to 88	101 (11); 84 to 125	0.004
Regional spinopelvic parameters
Pelvic tilt, percentage	32 (8); 17 to 51	28 (7);13 to 43	0.023
Sacral slope	43 (10); 26 to 60	55 (10); 28 to 73	< 0.001
Pelvic incidence	76 (9); 50 to 92	84 (SD 9); 67 to 101	0.006
L5 incidence¹²	70 (14); 42 to 95	52 (15); 27 to 86	< 0.001
Level of inflection point	T9 (1.4); T6 to T12	T11 (1.0); T9 to T12	< 0.001
Level of apex of lordosis	L2 (1.24); T10 to L3	L3 (0.6); L2 to L4	0.001
Lumbar lordosis (L1 to L5),°	66 (SD 16); 35 to 94	62 (SD 11); 46 to 84	0.300
Lordosis (S1-inflection point)	64 (SD 19); 34 to 105	77 (SD 10); 59 to 93	0.641
Thoracic kyphosis (T4 to T12)	13 (SD 13); 9 to 48	27 (SD 12); 0 to 44	0.001
Pelvis balanced (PT/SS ratio) %⁴	37	68
Pelvis balanced (L5 incidence), %¹²	21	76
Global spinopelvic parameters
T1 spinopelvic angle	-2 ( 7); -13- to +15)	-6 (3); -10 to 0	0.039
Sagittal vertical axis, cm	+ 4.9 (6.4); -4.8 to +20	0.7 (1.6); -1.5 to 4	0.009
Global spinal balance, %⁴	65	100

Mann-Whitney U test.

Dub-LSA, Dubousset lumbosacral angle; SD, standard deviation.