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

Figure 4

The diameter of the OLIF surgical corridor is 18 mm. The midline of the surgical corridor is at the center of the L5-S1 disc. Left, the V-line (-) group, more than half of the left iliac vein region is located in the dorsal part of V-line. In this situation, we could retract the LCIV dorsally. Right, the V-line (+) group, more than half of the left iliac vein region is located in ventral part of V-line. In this situation, we could retract the LCIV ventrally.