Cervical Transforaminal Injection and the Radicular Artery: Variation in Anatomical Location Within the Cervical Intervertebral Foramina

A larger population is necessary to characterize the range of anatomic variations in arterial supply within the foramina. Available studies support the current technique of fluoroscopic needle insertion. Yet, there is wide anatomic variation in the origin and location of these vessels, and even with strict adherence to technique, it is feasible that a properly placed needle could penetrate a radicular artery.