Fig. 1.

The indirect percutaneous cyst rupture technique as shown in three sequential procedural CT axial images. Image A demonstrates placement of a spinal needle into the posterior aspect of the right facet joint, with injection of contrast to fill the joint space (arrow). Image B demonstrates contrast extending from the joint and filling the FSC (arrow). Image C demonstrates extravasation of contrast into the right lateral and ventral aspects of the epidural space after successful FSC rupture (arrows).