[Retracted] Introducing V-Line as a New Strategy to Choose Surgical Corridor in Oblique Lumbar Interbody Fusion at the L5-S1 Segment

Table 1

Univariate analysis of risk factors for V-line (+) during OLIF51.

Risk factors	Patients with V-line (+),	Patients with V-line (-),
Sex
Female	14	30	1.672	0.196
Male	22	27
Age			-0.764	0.447
L5-S1 disk AP diameter			-0.229	0.820
L5-S1 disk left-right diameter			-1.564	0.121
Tilt angle of surgical corridor			3.595	0.001
Sacral slope			3.269	0.002
Low iliac crest^#	22	21	5.228	0.022
High iliac crest	14	36
The left iliac vein position (VP)
Medial	22	3	44.570	<0.001
Intermediate	13	20
Lateral	1	34
The iliocaval junction position (JP)
Very high	8	31	23.263	<0.001
High	16	22
Low	0	3
Very low	12	1

, ^#subjects were divided into low iliac crest group and high iliac crest group according to the average value of the tilt angle of surgical corridor.