Stand-Alone Lateral Interbody Fusion for the Treatment of Low-Grade Degenerative Spondylolisthesis

Table 2

Radiological parameters.

	Preoperative	6 weeks	P value	12 months	P value	24 months	P value
Olisthesis	15.1%  ± 5.2%	7.4%  ± 5.3%	<0.001*	6.7%  ± 4.2%	<0.001*	7.1%  ± 6.0%	<0.001*
Increase in disc height	—	78% (−29–812)	<0.001*	61% (−21–703)	<0.001*	55% (−28–710)	<0.001*
Segmental lordosis	9.7 ± 3.8°	16.3 ± 5.4°	<0.001*	15.8 ± 6.4°	<0.001*	15.7 ± 7.1°	<0.001*
Global lordosis	42.8 ± 15.0°	48.5 ± 13.8°	0.01*	46.9 ± 12.5°	0.13	46.5 ± 16.2°	0.23
Bone fusion	—	—	—	67.3%	—	86.5%	—

*statistically significant. Values are expressed as mean ± standard deviation or as mean (minimum and maximum).