“…Two of these studies were RCTs: in one 44 radiofrequency lumbar ganglionectomy was compared to sham surgery for sciatica and in the other radiofrequency lesions made at 2 different temperatures were compared. 125 The remaining articles were case series ranging in size from 3 to 102 patients ( Table 2, 17 studies 29,34,44,52,56,64,76,80,85,89,112,125,126,131,138,152,154 ).…”