title: Anterolateral dynamized instrumentation and fusion for unstable thoracolumbar and lumbar burst fractures.
abstract: METHODS
  A retrospective chart review of 36 patients treated with dynamized anterolateral instrumentation and fusion after decompression for thoracolumbar and lumbar burst fractures is presented.
  
  
  OBJECTIVE
  To evaluate a device that allows continual bone graft vertebral endplate compression and determine its potential for healing in patients with thoracolumbar and lumbar burst fractures.
  
  
  BACKGROUND
  Anterior spinal surgery has led to implant adaptations. Such implants have undergone an evolution in hopes of improving the rate of healing and avoiding neurovascular catastrophes.
  
  
  METHODS
  Thirty-six patients underwent anterior decompression dynamized instrumentation and fusion for thoracolumbar and lumbar burst fractures. This involved a dual-rod, quadrilateral, cross-linked frame that allows for continual compression but deters rotation and shear stresses.
  
  
  RESULTS
  All patients healed solidly without instrumentation failure. An average recovery of 1.3 Frankel grades was recorded. Subsidence of bone graft vertebral endplate was less than in those placed in a trough.
  
  
  CONCLUSIONS
  Dynamized load-sharing anterolateral Cotrel-Dubousset instrumentation led to solid bone graft healing without implant failure by allowing continual compression while deterring shear and rotational stresses.
authors.affiliation: Division of Orthopaedic Surgery, Albany Medical College, New York, USA.
authors.forename: A L
authors.initials: AL
authors.lastname: Carl
authors.forename: B I
authors.initials: BI
authors.lastname: Tranmer
authors.forename: B L
authors.initials: BL
authors.lastname: Sachs
mesh_terms: D000328:Adult; D004867:Equipment Design; D005260:Female; D006801:Humans; D007431:Intraoperative Complications; D008159:Lumbar Vertebrae / Q000293:injuries*; D008297:Male; D009984:Orthopedic Fixation Devices; D011183:Postoperative Complications; D016103:Spinal Fractures / Q000000981:diagnostic imaging / Q000601:surgery*; D013123:Spinal Fusion; D013904:Thoracic Vertebrae / Q000293:injuries*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome