Fig. 2From: Clinical outcome of biportal endoscopic revisional lumbar discectomy for recurrent lumbar disc herniationa Mimetic diagram of lumbar revision discectomy. b The placement of surgical ports laterally with respect to those of the conventional method helps to easily access the epidural space (white bar) without dealing with the fibrotic tissue (red star). c Decompressive laminectomy was performedBack to article page