case_images: PMC7196202_01
case_images: (A) T2-weighted sagittal magnetic resonance imaging showing left L5-S1 foraminal stenosis. (B) Left L5 selective nerve root injection using a Racz catheter.
case_images: JPR-13-843-g0001.jpg
case_images: PMC7196202_01_JPR-13-843-g0001.jpg
case_images: F0001
case_images: Magnetic resonance imaging revealed severe foraminal stenosis at the left L5-S1 (Figure 1A). Through the injection of a contrast dye via the catheter, the correct position (near the left L5 nerve root) of the needle tip was confirmed (Figure 1B).