Spinal needle (DGL)
Spinal needles have been modified to minimize complications. A spinal needle can be used as a marker with the tip in contact with the superior lamina of the targeted interlaminar space in the anteroposterior (AP) view as long as the laminar bone is visible. The thoracic interlaminar epidural injection is performed with the “marker” so that there is no mistaking the level of injection when maneuvering the fluoroscope from the AP view to the caudally tilted trajectory view. The epidural needle is placed with the use of a paramedian trajectory view using fluoroscopic imaging and confirming the position and depth of the needle tip via the AP, lateral, and contralateral oblique (CLO) views.
To understand spinal needle manipulation, the interventionalist needs to be completely familiar with the anatomy of a typical spinal needle