Radiological and clinical outcomes of midline lumbar fusion on sagittal lumbar-pelvic parameters for degenerative lumbar diseases

Table 3 Clinical outcomes of the midline lumbar fusion and minimally invasive transforaminal lumbar interbody fusion groups before and after surgery

	MIDLF (n = 34)	MIS-TLIF (n = 29)	P value
Back pain VAS score
Preoperative	6.00 (0.00-8.00)	6.00 (0.00-9.00)	0.788
3 mo postoperation	2.00 (0.00-5.00)	1.00 (0.00-4.00)	0.028a
Final follow-up	1.00 (0.00-5.00)	1.00 (0.00-3.00)	0.928
Leg pain VAS score
Preoperative	7.00 (0.00-9.00)	8.00 (2.00-10.00)	0.039a
3 mo postoperation	2.00 (0.00-3.00)	1.00 (0.00-3.00)	0.270
Final follow-up	1.00 (0.00-2.00)	0.00 (0.00-5.00)	0.107
ODI score
Preoperative	63.50 ± 13.33	66.86 ± 14.61	0.343
3 mo postoperation	23.47 ± 5.66	20.21 ± 6.83	0.042a
Final follow-up	14.12 ± 6.10	13.28 ± 4.13	0.531

^aP < 0.05.

VAS: Visual analog scale; ODI: Oswestry disability index; MIDLF: Midline lumbar fusion; MIS-TLIF: Minimally invasive transforaminal lumbar interbody.