Lumbar Transforaminal Anterior Epidural Steroid Injections in Discogenic Low Back Pain

Kambin's triangle approach in transforaminal epidural injection: Kambin's triangle is defined as a right triangle over the dorsolateral disc. The hypotenuse is the exiting nerve root, the base is the superior border of the caudal vertebra, and the height is the dura/traversing nerve root. it is possible to inject agents at the entrance and middle zone as the main areas of nerve entrapment by injecting at the retrodiscal area of the entrance zone, as proximal area of the targeted nerve root.