title: Vertebral reconstruction using the telescopic plate spacer-thoracolumbar (TPS-TL) device.
abstract: METHODS
  Retrospective study of surgical technique and outcome.
  
  
  OBJECTIVE
  The authors conducted a study to evaluate the ability of the TPS-TL (telescopic plate spacer-thoracolumbar) implant to correct kyphotic deformity and restore vertebral body height after vertebrectomy in the thoracolumbar spine.
  
  
  BACKGROUND
  TPS-TL is a novel vertebral body replacement device that consists of an expandable cage with an integrated plate component for transvertebral screw fixation.
  
  
  METHODS
  This is a retrospective study of 20 patients who underwent anterior column reconstruction with TPS-TL after a 1 or 2 level thoracolumbar vertebrectomy. Preoperative and postoperative sagittal alignment and vertebral body heights were radiologically analyzed in all patients. The mean follow-up was 14 months.
  
  
  RESULTS
  Preoperative and postoperative Cobb angles were measured to assess sagittal alignment. The average preoperative Cobb angle was 16.0 + or - 7 degrees. This was reduced to 9.8 + or - 10 degrees at the final follow-up (P<0.001). Percent of ideal vertebral body height was used to assess postoperative restoration of vertebral body height. This value was obtained by creating a ratio of the height of the effected vertebral levels to the height of the adjacent normal vertebral bodies. The mean percent of ideal vertebral body height improved from a preoperative value from 86.2 + or - 2% to 93.1 + or - 6% at the final follow-up (P<0.001).
  
  
  CONCLUSIONS
  The TPS-TL implant is effective in restoring vertebral body height and correcting kyphotic deformity after thoracolumbar vertebrectomy.
authors.affiliation: Department of Neurosurgery, Yeditepe University, Istanbul, Turkey.
authors.forename: Basar
authors.initials: B
authors.lastname: Atalay
authors.forename: Ron I
authors.initials: RI
authors.lastname: Riesenburger
authors.forename: Clemens M
authors.initials: CM
authors.lastname: Schirmer
authors.forename: Rafeeque A
authors.initials: RA
authors.lastname: Bhadelia
authors.forename: Simcha J
authors.initials: SJ
authors.lastname: Weller
mesh_terms: D000328:Adult; D001860:Bone Plates / Q000592:standards; D005260:Female; D006801:Humans; D016268:Internal Fixators / Q000592:standards*; D007738:Kyphosis / Q000000981:diagnostic imaging / Q000601:surgery; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D019635:Neurosurgical Procedures / Q000295:instrumentation* / Q000379:methods; D017063:Outcome Assessment, Health Care; D011859:Radiography; D019651:Plastic Surgery Procedures / Q000295:instrumentation* / Q000379:methods; D012189:Retrospective Studies; D013122:Spinal Diseases / Q000000981:diagnostic imaging / Q000601:surgery; D013123:Spinal Fusion / Q000295:instrumentation* / Q000379:methods; D013904:Thoracic Vertebrae / Q000000981:diagnostic imaging / Q000601:surgery*; D016896:Treatment Outcome