Efficacy of OLIF combined with pedicle screw internal fixation for lumbar spinal stenosis on spinal canal changes before and after surgery

Table 6 Comparison of parameter changes in visual analogue score (VAS), the Oswestry Disability Index (ODI), lumbar lordosis (LL), sagittal vertical axis (SVA), disc height (DH), the cross-sectional area of vertebral canal (CSAVC), the cross-sectional area of dural sac (CSADS), the cross-sectional area of intervertebral foramen (CSAIF), and spinal canal volume (SCV) parameters between preoperative and 1 year postoperative follow-up parameters

Parameters	Preop (n = 16)	1 year postop (n = 16)	t value	p value
VAS (score)	6.76 ± 0.59	1.91 ± 0.29	57.82	0.000
ODI (%)	67.93 ± 3.02	23.28 ± 1.75	95.77	0.000
LL (°)	34.6 ± 6.7	44.9 ± 6.1	13.09	0.000
SVA (mm)	53.6 ± 6.0	27.2 ± 2.7	− 23.57	0.001
DH (mm)	9.58 ± 1.40	11.87 ± 1.22	11.31	0.000
CSAVC (mm²)	95.39 ± 21.51	117.87 ± 14.69	6.96	0.000
CSADS (mm²)	64.86 ± 16.26	90.27 ± 16.12	8.28	0.002
CSAIF (mm²)	80.82 ± 15.39	103.75 ± 13.18	10.02	0.000
SCV (mm³)	889.90 ± 177.50	1389.11 ± 152.39	13.75	0.010

One year postoperative follow-up parameters VAS, ODI, LL, SVA, DH, CSAVC, CSADS, CSAIF, and SCV values were statistically significantly greater than preoperative parameter values (P < 0.05)

ISSN: 1749-799X