Ultrasound-Guided Selective Nerve Root Block versus Fluoroscopy-Guided Interlaminar Epidural Block versus Fluoroscopy-Guided Transforaminal Epidural Block for the Treatment of Radicular Pain in the Lower Cervical Spine: A Retrospective Comparative Study

Figure 1

(A) Ultrasonography-guided selective nerve root block (target nerve root: C6). The needle (arrow) is placed on the dorsal surface of the C6 nerve root. AT, anterior tubercle; PT, posterior tubercle. (B) C6 transforaminal epidural injection. The A-P view of the contrast media which spread into the intraforaminal lesion. (C) C5-6 interlaminar epidural injection. Lateral view of the contrast media which spreads into the epidural space. The arrow indicates a needle.