RT Journal Article SR Electronic T1 The Triad of Nerve Root Enhancement, Thickening, and Displacement in Patients with Sciatica and Recurrent Disk Herniation in the Postoperative Lumbar Spine May Prompt Further Surgical Treatment in Patients with Failed-Back Surgical Syndrome JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1068 OP 1069 DO 10.3174/ajnr.A1552 VO 30 IS 5 A1 Chaljub, G. A1 Sullivan, R.D. A1 Patterson, J.T. YR 2009 UL http://www.ajnr.org/content/30/5/1068.abstract AB