Grade 2 Spondylolisthesis at L4-5 Treated by XLIF: Safety and Midterm Results in the “Worst Case Scenario”

Table 3

Average clinical and radiographic outcome data of patients with at least 12 months followup.

	Preop	Postop	3 months	6 months	12 months	𝑃
VAS (pain) (stdev.)	8.7 (1.3)		2.2 (2.0)	2.3 (22.0)	2.2 (2.0)	<0.001
Disk height (mm) (stdev.)	4.6 (2.2)	10.3 (2.6)	9.7 (2.6)	9.3 (2.6)	9.0 (2.5)	<0.001
Slip (mm) (stdev.)	11.1 (1.7)	3.0 (2.0)	3.3 (2.2)	3.6 (2.3)	3.6 (2.3)	<0.001
Lenke			1.9 (0.5)	1.4 (0.4)	1.1 (0.3)

Mm: millimeters, stdev: standard deviation.