title: Posterior migration of cervical spinal cord between split laminae as a complication of laminoplasty.
abstract: METHODS
  This is a case report.
  
  
  OBJECTIVE
  To focus attention on a possible neurologic complication of laminoplasty.
  
  
  BACKGROUND
  An iatrogenic spinal cord lesion developed after laminoplasty as an operative complication of unknown cause.
  
  
  METHODS
  Two patients had iatrogenic damage to the spinal cord from an unknown cause after laminoplasty of the cervical spine, but recovered soon after an additional laminectomy. They were evaluated with regard to the mechanism of damage and prevention.
  
  
  RESULTS
  The spinal cord damage occurred when the spinal cord migrated posteriorly and deformed between the split laminae at the apex of the lordosis, where the maximum posterior displacement of the spinal cord was achieved.
  
  
  CONCLUSIONS
  This damage was caused by a relatively narrower canal resulting from the split laminae of the apex of the adjacent laminae.
authors.affiliation: Department of Orthopaedic Surgery, Niigata University School of Medicine, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Kimura
authors.forename: T
authors.initials: T
authors.lastname: Homma
authors.forename: S
authors.initials: S
authors.lastname: Uchiyama
authors.forename: A
authors.initials: A
authors.lastname: Yamazaki
authors.forename: K
authors.initials: K
authors.lastname: Imura
mesh_terms: D000368:Aged; D002574:Cervical Vertebrae / Q000601:surgery*; D005260:Female; D006801:Humans; D007796:Laminectomy; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery; D012086:Reoperation; D013119:Spinal Cord Injuries / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology / Q000601:surgery