Optimal Correction of Adult Spinal Deformities Requires Restoration of Distal Lumbar Lordosis

Table 2

Postoperative values of radiographic parameters between “aligned” and “not aligned” groups.

Postoperative	Aligned	Not aligned	value
Pelvic incidence (°)	52	61	0.009
Pelvic tilt (°)	24	33	<0.001
L1-S1 lumbar lordosis (°)	49	37	<0.001
L1-L4 PLL (°)	18	16	0.39
L4-S1 DLL (°)	31	22	0.003
PI-LL (°)	4	23	<0.001
T4-T12 thoracic kyphosis (°)	48	40	0.002
Sagittal vertical axis (mm)	23	63	<0.001