Journal of Korean Neurosurgical Society

  • 제54권1호
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  • Pages.25-29
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  • 2013
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  • 2005-3711(pISSN)
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  • 1598-7876(eISSN)
대한신경외과학회 (The Korean Neurosurgical Society)
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Anatomic Consideration of the C1 Laminar Arch for Lateral Mass Screw Fixation via C1 Lateral Lamina : A Landmark between the Lateral and Posterior Lamina of the C1

  • Kim, Jung-Hwan (Department of Neurosurgery, Gangneung Asan Hospital, University of Ulsan College of Medicine) ;
  • Kwak, Dai-Soon (Department of Anatomy, Catholic Institute for Applied Anatomy, College of Medicine, The Catholic University of Korea) ;
  • Han, Seung-Ho (Department of Anatomy, College of Medicine, Chung-Ang University) ;
  • Cho, Sung-Min (Department of Neurosurgery, Donghae Dong-In Hospital) ;
  • You, Seung-Hoon (Department of Neurosurgery, Gangneung Asan Hospital, University of Ulsan College of Medicine) ;
  • Kim, Moon-Kyu (Department of Neurosurgery, Gangneung Asan Hospital, University of Ulsan College of Medicine)
  • 투고 : 2012.12.22
  • 심사 : 2013.07.17
  • 발행 : 2013.07.28
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초록

Objective : To clarify the landmark for deciding the entry point for C1 lateral mass screws via the posterior arch by using 3-dimensional (3D) computed images. Methods : Resnick insisted that the C1 posterior arch could be divided into pure posterior and lateral lamina (C1 pedicle). Authors studied where this transition point (TP) is located between the posterior lamina and the C1 pedicle and how it can be recognized. The 3D computed images of 86 cadaver C1s (M : F=45 : 41) were used in this study. Results : The superior ridge of the C1 posterior arch had 2 types of orientation. One was in the vertical direction in the C1 posterior lamina and the other was in the horizontal direction in the C1 pedicle. The TP was located at the border between the 2 areas, the same site as the posterior end of the groove of the vertebral artery. On posterior-anterior projection, the posterior arch was sharpened abruptly at TP. We were unable to identify the TP in 6.4% of specimens due to complete or partial osseous bridges. A total of 93.8% of the TP were located between the most enlarged point of the spinal canal and the medial wall of the vertebral artery. Conclusion : The anatomic entry zone of C1 lateral laminar screws was clarified and identified based on the TP by using preoperative 3D computed images.

키워드

참고문헌

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피인용 문헌

  1. Is the 4 mm height of the vertebral artery groove really a limitation of C1 pedicle screw insertion? vol.23, pp.5, 2013, https://doi.org/10.1007/s00586-014-3217-y
  2. The Clinical Experience of Computed Tomographic-Guided Navigation System in C1-2 Spine Instrumentation Surgery vol.56, pp.4, 2013, https://doi.org/10.3340/jkns.2014.56.4.330
  3. Applied anatomy of screw placement via the posterior arch of the atlas and anatomy-based refinements of the technique vol.26, pp.7, 2013, https://doi.org/10.1007/s00590-016-1771-1
  4. Computed Tomographic Morphometric Analysis of C1 and C2 for Lamina Cross Screw Placement in Malay Ethnicity vol.15, pp.1, 2013, https://doi.org/10.31616/asj.2019.0242