Comparison of biportal endoscopic vs minimally invasive transforaminal lumbar interbody fusion for single-level low-grade lumbar spondylolisthesis: A retrospective cohort study

doi:10.5312/wjo.124542

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World Journal of Orthopedics

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2218-5836

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Retrospective Cohort Study

Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.

World J Orthop. Oct 18, 2026; 17(10): 124542
Published online Oct 18, 2026. doi: 10.5312/wjo.124542

Table 1 Demographics and operative data, n (%)/mean ± SD

Variable	BE-TLIF (n = 32)	MI-TLIF (n = 31)	t/χ²	P value
Sex (male/female)	14/18	12/19	0.026	0.872
Age (year)	51.95 ± 9.20	54.29 ± 12.59	-0.758	0.451
BMI (kg/m²)	23.87 ± 1.92	23.81 ± 2.02	0.12	0.905
Course of disease (months)	12.30 ± 3.22	13.10 ± 2.68	1.07	0.289
Smoking (yes/no)	16/16	15/16	0.016	0.900
Level
L3/4	3 (9.4)	5 (16.1)		0.769¹
L4/5	23 (71.9)	20 (64.5)
L5/S1	6 (18.8)	6 (19.4)
Spondylolisthesis type
Degenerative	24 (75.0)	25 (80.6)	0.440	0.507
Isthmic	8 (25.0)	6 (19.4)	0.440	0.507
Meyerding grade
I	26 (81.3)	24 (77.4)	0.152	0.697
II	6 (18.8)	7 (22.6)	0.152	0.697

¹Fisher-Freeman-Halton exact test for overall distribution of levels.

BMI: Body mass index; BE-TLIF: Biportal endoscopic transforaminal lumbar interbody fusion; MI-TLIF: Minimally invasive transforaminal lumbar interbody fusion.

Full Size Table

Citation: He P, Sun J, Liu XW, Gao Q, Xu B, Cong Y, Zhao WL. Comparison of biportal endoscopic vs minimally invasive transforaminal lumbar interbody fusion for single-level low-grade lumbar spondylolisthesis: A retrospective cohort study. World J Orthop 2026; 17(10): 124542
URL: https://www.wjgnet.com/2218-5836/full/v17/i10/124542.htm
DOI: https://dx.doi.org/10.5312/wjo.124542

He P, Sun J, Liu XW, Gao Q, Xu B, Cong Y, Zhao WL. Comparison of biportal endoscopic vs minimally invasive transforaminal lumbar interbody fusion for single-level low-grade lumbar spondylolisthesis: A retrospective cohort study. World J Orthop 2026; 17(10): 124542 [DOI: 10.5312/wjo.124542]

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