Comparative Effectiveness of Two Different Approaches to Radiofrequency Ablation of Lumbar Medial Branch Nerves

"Traditional approach:~The electrode is introduced at a 15-20 degrees' ipsilateral oblique angle to the sagittal plane toward the junction of the superior articular process (SAP) and transverse process (TP) of the vertebral body to target the traversing medial branch nerve.~Parasagittal (new) approach:~The RF cannula is placed parasagittally and more dorsally. The remainder of the procedure does not differ from the traditional method."