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

Table 2 Comparison of perioperative parameters and complications, n (%)/mean ± SD

Variable	BE-TLIF (n = 32)	MI-TLIF (n = 31)	MD/RD (95%CI)	t/χ2	P value
Operation time (minute)	189.36 ± 20.94	150.35 ± 21.16	39.01 (28.40 to 9.62)	6.65	< 0.001
Hospital stay (days)	5.14 ± 1.28	6.19 ± 1.33	-1.05 (-1.71 to 0.39)	-2.93	< 0.0051
Preop Hb (g/L)	136.77 ± 12.59	138.10 ± 11.24	-1.33 (-7.34 to 4.68)	-0.41	0.681
Postop 24 hours Hb (g/L)	126.23 ± 13.50	125.84 ± 14.57	0.39 (-6.69 to 7.47)	0.10	0.919
Preop CRP (mg/L)	5.68 ± 2.34	6.03 ± 2.71	-0.35 (-1.63 to 0.93)	-0.50	0.621
Postop 24 hours CRP (mg/L)	20.90 ± 6.03	21.00 ± 6.15	-0.10 (-3.17 to 2.97)	-0.06	0.949
Preop CK (IU/L)	82.34 ± 35.74	84.26 ± 34.36	-1.92 (-19.58 to 15.74)	-0.20	0.844
Postop 24 hours CK (IU/L)	251.21 ± 29.48	316.52 ± 33.37	-65.31(-81.20 to -49.42)	-7.35	< 0.001
Complications	2 (6.3)	3 (9.7)	-3.4% (-16.8% to 9.9%)		0.672
Dural tear	1	2			0.610
Numbness	1	1			1.000

¹Fisher’s exact test.

BE-TLIF: Biportal endoscopic transforaminal lumbar interbody fusion; MI-TLIF: Minimally invasive transforaminal lumbar interbody fusion; Hb: Hemoglobin; CK: Creatine kinase; CRP: C-reactive protein.