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 2

Flow diagram indicating progress of patients through the study. US-SNRB: ultrasonography-guided selective nerve root block, IL-CESI: fluoroscopy-guided interlaminar cervical epidural steroid injection, TF-CESI: fluoroscopy-guided transforaminal cervical epidural steroid injection.