Journal of Korean Neurosurgical Society

The Korean Neurosurgical Society (대한신경외과학회)
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Bone Cement-Augmented Short Segment Fixation with Percutaneous Screws for Thoracolumbar Burst Fractures Accompanied by Severe Osteoporosis

  • Jung, Hyun Jin (Department of Neurosurgery, School of Medicine, Chosun University) ;
  • Kim, Seok Won (Department of Neurosurgery, School of Medicine, Chosun University) ;
  • Ju, Chang Il (Department of Neurosurgery, School of Medicine, Chosun University) ;
  • Kim, Sung Hoon (Department of Rehabilitation, Wonju College of Medicine, Yonsei University) ;
  • Kim, Hyen Sung (Department of Neurosurgery, Heori Sarang Hospital)
  • Received : 2012.03.29
  • Accepted : 2012.10.04
  • Published : 2012.10.28
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Abstract

Objective : The purpose of this study was to determine the efficacy of bone cement-augmented short segment fixation using percutaneous screws for thoracolumbar burst fractures in a background of severe osteoporosis. Methods : Sixteen patients with a single-level thoracolumbar burst fracture (T11-L2) accompanying severe osteoporosis treated from January 2008 to November 2009 were prospectively analyzed. Surgical procedures included postural reduction for 3 days and bone cement augmented percutaneous screw fixation at the fracture level and at adjacent levels without bone fusion. Due to the possibility of implant failure, patients underwent implant removal 12 months after screw fixation. Imaging and clinical findings, including involved vertebral levels, local kyphosis, canal encroachment, and complications were analyzed. Results : Prior to surgery, mean pain score (visual analogue scale) was 8.2 and this decreased to a mean of 2.2 at 12 months after screw fixation. None of the patients complained of pain worsening during the 6 months following implant removal. The percentage of canal compromise at the fractured level improved from a mean of 41.0% to 18.4% at 12 months after surgery. Mean kyphotic angle was improved significantly from $19.8^{\circ}$ before surgery to 7.8 at 12 months after screw fixation. Canal compromise and kyphotic angle improvements were maintained at 6 months after implant removal. No significant neurological deterioration or complications occurred after screw removal in any patient. Conclusion : Bone cement augmented short segment fixation using a percutaneous system can be an alternative to the traditional open technique for the management of selected thoracolumbar burst fractures accompanied by severe osteoporosis.

Keywords

References

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