Target: Spinal ganglion: lateral aspect of neuroforamen at the level of the facet joint frontline.

Procedure:

• - Patient in prone position
• - Axial scan (generally at the lower three lumbar levels) to locate target slice and chek concordance between symptoms and radiological findings
• - Posterolateral approach
• - CT-fluoroscopy guided direct puncture from skin to the anterior aspect facet joint, at the neuroforaminal exit, in front of the spinal ganglion with a 22 gauge needle.
• - Steroid injection

Danger: Easy procedure without any particular risk