J Korean Neurosurg Soc 52 | October 2012 al. : Single-level instrumented posterolateral fusion of the lumbar spine with a local bone graft versus an iliac crest bone graft : a prospective, randomized study with a 2-year follow-up. Eur Spine J 20 : 635-639, 2011 26. Okuda S, Iwasaki M, Miyauchi A, Aono H, Morita M, Yamamoto T : Risk factors for adjacent segment degeneration after PLIF. Spine (Phila Pa 1976) 29 : 1535-1540, 2004 27. Parker JW, Lane JR, Karaikovic EE, Gaines RW : Successful short-seg- ment instrumentation and fusion for thoracolumbar spine fractures : a consecutive 41/2-year series. Spine (Phila Pa 1976) 25 : 1157-1170, 2000 28. Roy-Camille R, Saillant G, Mazel C : Internal fixation of the lumbar spine with pedicle screw plating. Clin Orthop Relat Res 203 : 7-17, 1986 29. Sanderson PL, Fraser RD, Hall DJ, Cain CM, Osti OL, Potter GR : Short segment fixation of thoracolumbar burst fractures without fusion. Eur Spine J 8 : 495-500, 1999 30. Sasso RC, Cotler HB : Posterior instrumentation and fusion for unstable fractures and fracture-dislocations of the thoracic and lumbar spine. A comparative study of three fixation devices in 70 patients. Spine (Phila Pa 1976) 18 : 450-460, 1993 31. Sengupta DK, Truumees E, Patel CK, Kazmierczak C, Hughes B, Elders G, et al. : Outcome of local bone versus autogenous iliac crest bone graft in the instrumented posterolateral fusion of the lumbar spine. Spine (Phila Pa 1976) 31 : 985-991, 2006 32. Shono Y, McAfee PC, Cunningham BW : Experimental study of thora- columbar burst fractures. A radiographic and biomechanical analysis of anterior and posterior instrumentation systems. Spine (Phila Pa 1976) 19 : 1711-1722, 1994 33. Siebenga J, Leferink VJ, Segers MJ, Elzinga MJ, Bakker FC, Haarman HJ, et al. : Treatment of traumatic thoracolumbar spine fractures : a multicenter prospective randomized study of operative versus nonsur- gical treatment. Spine (Phila Pa 1976) 31 : 2881-2890, 2006 34. Tezeren G, Kuru I : Posterior fixation of thoracolumbar burst fracture : short-segment pedicle fixation versus long-segment instrumentation. J Spinal Disord Tech 18 : 485-488, 2005 35. Tropiano P, Huang RC, Louis CA, Poitout DG, Louis RP : Functional and radiographic outcome of thoracolumbar and lumbar burst fractures managed by closed orthopaedic reduction and casting. Spine (Phila Pa 1976) 28 : 2459-2465, 2003 36. Vaccaro AR, Nachwalter RS, Klein GR, Sewards JM, Albert TJ, Garfin SR : The significance of thoracolumbar spinal canal size in spinal cord injury patients. Spine (Phila Pa 1976) 26 : 371-376, 2001 37. van der Roer N, de Lange ES, Bakker FC, de Vet HC, van Tulder MW : Management of traumatic thoracolumbar fractures : a systematic review of the literature. Eur Spine J 14 : 527-534, 2005 38. Verlaan JJ, Diekerhof CH, Buskens E, van der Tweel I, Verbout AJ, Dhert WJ, et al. : Surgical treatment of traumatic fractures of the thorac- ic and lumbar spine : a systematic review of the literature on techniques, complications, and outcome. Spine (Phila Pa 1976) 29 : 803-814, 2004 39. Wang ST, Ma HL, Liu CL, Yu WK, Chang MC, Chen TH : Is fusion necessary for surgically treated burst fractures of the thoracolumbar and lumbar spine? : a prospective, randomized study. Spine (Phila Pa 1976) 31 : 2646-2652; discussion 2653, 2006 40. Weinstein JN, Collalto P, Lehmann TR : Thoracolumbar “burst” frac- tures treated conservatively : a long-term follow-up. Spine (Phila Pa 1976) 13 : 33-38, 1988 41. Wilcox RK, Boerger TO, Allen DJ, Barton DC, Limb D, Dickson RA, et al. : A dynamic study of thoracolumbar burst fractures. J Bone Joint Surg Am 85 : 2184-2189, 2003 352