Radiofrequency Ablation of the Superior Cluneal Nerve

Firstly, the posterior superior iliac spine was showed in the transverse plane, and it was gradually moved proximally until gluteus maximus muscle disappears and gluteus medius arises. Medial branch of the SCN is seen between iliac crest and thoracolumbar fascia as an ovoid structure. Radiofrequency device was utilized with 22-gauge 10-cm, 5 mm RF cannulas for all procedures. Cannula was placed thorough the SCN area and Sensory fiber stimulation was started between 0.3 and 0.5 V. The patient was asked for feedback on symptoms such as numbness, paresthesia or pain. If the patient did not report any sensory symptoms within the specified sensory stimulation range, the cannula was repositioned. Motor stimulation was given up to 1.5 V and it was checked whether there was any contraction or not. If there is no contraction detected, the SCN was ablated at 42° degrees centigrade for 240 seconds.