Table 3.

Mean Values and Matching Comparison Results for the Radiographical Parameters of the LIF ± ALIF Cohort and PSF Cohort

Parameters	n	LIF ± ALIF cohort	PSF cohort	p–value
Preoperative parameters
Sagital vertical aligment†	22	4.9 ± 4.7	5.9 ± 4.3	0.4
Coronal Cobb angle*	30	39° ± 18°	25° ± 15°	0.004
Lumbar lordosis*	33	38° ± 14°	38° ± 16°	1
Pelvic incidence*	33	59° ± 16°	56° ± 15°	0.4
Pelvic tilt*	33	28° ± 11°	27° ± 11°	0.8
Sacral slope*	33	32° ± 12°	29° ± 12°	0.5
Postoperative parameters
Sagital vertical aligment†	22	3.8 ± 3.2	6.2 ± 5.7	0.09
Coronal Cobb angle*	30	16° ± 11°	18° ± 15°	0.6
Lumbar lordosis*	33	44° ± 14°	36° ± 15°	0.02
Pelvic incidence*	33	55° ± 13°	54° ± 11°	0.5
Pelvic tilt*	33	22° ± 10°	26° ± 10°	0.08
Sacral slope*	33	33° ± 11°	28° ± 10°	0.03
Change between postoperative and preoperative parameters
Sagital vertical aligment†	22	– 1.1 ± 4	0.3 ± 5	0.3
Coronal Cobb angle*	30	– 24° ± 13°	– 7° ± 14°	<0.0001
Lumbar lordosis*	33	6° ± 16°	– 2° ± 12°	0.04
Pelvic incidence*	33	– 4° ± 10°	– 2° ± 14°	0.6
Pelvic tilt*	33	– 5° ± 13°	– 0.5° ± 9°	0.06
Sacral slope*	33	2° ± 13°	– 2° ± 11°	0.3

^†Values were measured in centimeters and presented as mean ± standard deviation.

^*Values were measured in degrees and presented as mean ± standard deviation.

n value indicates number of matched case–control sets.

LIF ± ALIF cohort: Patients underwent, in addition to posterior fusion constructs, LIF with or without a simultaneous ALIF.

PSF cohort: Patients underwent posterior spine fusion alone (PSF) using instrumentation and bone graft.

P value in boldface indicates a statistical significance.