Journal of Korean Neurosurgical Society

  • 제38권4호
  • /
  • Pages.265-268
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  • 2005
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  • 2005-3711(pISSN)
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  • 1598-7876(eISSN)
대한신경외과학회 (The Korean Neurosurgical Society)
권호 표지

Radiologic Evaluation of Proper Pedicle Screw Placement after Pedicle Screw Fixation in Degenerative Lumbar Disc Disease

  • Ju, Sun-Min (Department of Neurosurgery, Hanyang University College of Medicine) ;
  • Kim, Young-Soo (Department of Neurosurgery, Hanyang University College of Medicine) ;
  • Kim, Sung-Bum (Department of Neurosurgery, Hanyang University College of Medicine) ;
  • Ko, Yong (Department of Neurosurgery, Hanyang University College of Medicine) ;
  • Oh, Seong-Hoon (Department of Neurosurgery, Hanyang University College of Medicine)
  • 발행 : 2005.10.28
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초록

Objective : With the increasing popularity of pedicle screw fixation devices for several indications, the safety and reliability of screw insertion in the small pedicle has become a major issue. Many studies have investigated the accuracy of screw placement after pedicle screw fixation using various method. The reported displacement rates have been very different. The purpose of the study is to investigate the proper placement of pedicle screw insertion in the lumbar spine on 26 consecutive patients. Methods : Between September and December 2003, 26 consecutive patients [16women and 10men] were analyzed after transpedicular screw fixation of the lumbar and lumbosacral spine. After pedicle screw fixation in this study, 2-mm slices of CT scan were performed in all patients to detect caudal and cranial deviation of screw and medial and lateral deviation. Pedcile screw placement related complication was evaluated clinically. Results : A total of 144 inserted pedicle were analyzed in 26patients, and 58pedicle screws [40.3%] were detected to be improper placement. There were 14level [9.0%] of caudal or cranial deviation and 44level [30.6%] of medial or lateral deviation to the pedicle. Extra-pedicle placement was found on 4levels [2.7%] with only lease of neurologic injury. Conclusion : Proper screw placement, though complication rate is low, is important not only for clinical symptom but also for biomechanics. Further study for screw placement related biomechanical changes is needed.

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참고문헌

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