Clinical significance of redundant nerve roots in patients with lumbar spinal stenosis undergoing oblique lumbar interbody fusion combined with percutaneous internal fixation

Table 9 Comparison of postoperative clinical and radiographic data between Group 1 and Group 2 patients

	Group 1	Group 2	t/X²	P
Number	14	21
Operation time (hours)	1.65 ± 0.46	1.76 ± 0.80	0.497	0.622
Blood loss (ml)	76.43 ± 29.25	63.33 ± 24.15	1.444	0.158
Postoperative DH (cm)	1.51 ± 0.18	1.64 ± 0.19	2.091	0.044
Pre- and post-operative DH difference (cm)	0.42 ± 0.18	0.53 ± 0.21	1.592	0.121
Postoperative LLA (°)	44.46 ± 8.48	43.16 ± 15.93	0.313	0.757
Pre- and post-operative LLA difference (°)	4.65 ± 8.17	−2.76 ± 10.73	2.191	0.036
Postoperative CSA (cm²)	0.52 ± 0.16	0.91 ± 0.38	4.138	0.000
Pre- and post-operative CSA difference (cm²)	0.11 ± 0.16	0.41 ± 0.34	3.386	0.002
Postoperative low back pain VAS (score)	3.93 ± 0.83	3.10 ± 0.44	3.456	0.003
Pre- and post-operative low back pain VAS difference	−1.93 ± 0.62	−2.00 ± 0.77	0.289	0.774
Postoperative leg pain VAS (score)	3.64 ± 1.01	2.71 ± 0.84	2.948	0.006
Pre- and post-operative leg pain VAS difference	−1.64 ± 0.63	−2.24 ± 1.41	1.694	0.101
Postoperative ODI (%)	51.00 ± 3.11	44.19 ± 3.79	5.577	0.000
Pre- and post-operative ODI difference	−6.07 ± 2.79	−10.71 ± 5.47	2.923	0.006
Cage position (anterior: middle)	10:4	2:19	14.287	0.000

DH, Disc height; LLA, Lumbar lordotic angle; CSA, cross-sectional area; VAS, visual analogue scale; ODI, Oswestry disability index

ISSN: 1749-799X