Fig. 2. (A ) Right anterior oblique radiograph demonstrating a needle in position along the posterior aspect of the right C6–C7 intervertebral foramen. Inset of midportion of image with bony structures labeled: C6 = C6 vertebral body; C7 = C7 vertebral body; IAP = inferior articular process; LA = lamina; Ped = pedicle; SAP = superior articular process; SpP = spinous process. (B ) Anteroposterior radiograph demonstrating needle in final position within the right C6–C7 intervertebral foramen. The needle lies halfway between the medial and lateral borders of the articular pillars. Inset of midportion of image with bony structures labeled: Facets = medial and lateral aspect of the facet column; SpP = spinous processes of C5, C6, and C7; TrP (T1) = transverse process of T1.