title: Magnetic resonance imaging evaluation of the adolescent patient with idiopathic scoliosis before spinal instrumentation and fusion. A prospective, double-blinded study of 140 patients.
abstract: METHODS
  This was a prospective, double-blinded study of the magnetic resonance imaging findings in the neural axis of 140 neurologically normal typical adolescents with idiopathic scoliosis who were scheduled for scoliosis surgery.
  
  
  OBJECTIVE
  To detect the prevalence of spinal cord and neural axis abnormalities in this select population.
  
  
  BACKGROUND
  No similar study exists, although a few related studies were published.
  
  
  METHODS
  Full-length neural axis magnetic resonance imaging studies were reviewed independently by two radiologists who specialize in the spine.
  
  
  RESULTS
  Only four patients had a definite abnormality-one a small thoracic syrinx and the other three with a Chiari malformation. None of these required neurosurgery. All 140 patients had their scoliosis surgery without necrologic compromise.
  
  
  CONCLUSIONS
  Routine magnetic resonance imaging evaluation of neurologically normal, typical adolescents with idiopathic scoliosis is not warranted, based on this study.
authors.affiliation: Minnesota Spine Center, Minneapolis, USA.
authors.forename: R B
authors.initials: RB
authors.lastname: Winter
authors.forename: J E
authors.initials: JE
authors.lastname: Lonstein
authors.forename: K B
authors.initials: KB
authors.lastname: Heithoff
authors.forename: J A
authors.initials: JA
authors.lastname: Kirkham
mesh_terms: D000293:Adolescent; D000013:Congenital Abnormalities / Q000453:epidemiology; D004311:Double-Blind Method; D006801:Humans; D016268:Internal Fixators; D008279:Magnetic Resonance Imaging / Q000706:statistics & numerical data; D011300:Preoperative Care; D015995:Prevalence; D011446:Prospective Studies; D012600:Scoliosis / Q000473:pathology* / Q000601:surgery; D013116:Spinal Cord / Q000002:abnormalities*; D013123:Spinal Fusion