Journal of Korean Neurosurgical Society

  • 제54권1호
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  • Pages.14-18
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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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Measurement of Critical Structures around Paraclinoidal Area : A Cadaveric Morphometric Study

  • Lee, Hyun-Woo (Department of Neurosurgery, College of Medicine, Dong-A University) ;
  • Park, Hyun-Seok (Department of Neurosurgery, College of Medicine, Dong-A University) ;
  • Yoo, Ki-Soo (Department of Anatomy, College of Medicine, Dong-A University) ;
  • Kim, Ki-Uk (Department of Neurosurgery, College of Medicine, Dong-A University) ;
  • Song, Young-Jin (Department of Neurosurgery, College of Medicine, Dong-A University)
  • 투고 : 2013.01.12
  • 심사 : 2013.07.17
  • 발행 : 2013.07.28
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초록

Objective : Although removal of the anterior clinoid process (ACP) is essential surgical technique, studies about quantitative measurements of the space broadening by the anterior clinoidectomy are rare. The purposes of this study are to investigate the dimension of the ACP, to quantify the improved exposure of the parasellar space after extradural anterior clinoidectomy and to measure the correlation of each structure around the paraclinoidal area. Methods : Eleven formalin-fixed Korean adult cadaveric heads were used and frontotemporal craniotomies were done bilaterally. The length of C6 segment of the internal carotid artery on its lateral and medial side and optic nerve length were checked before and after anterior clinoidectomy. The basal width and height of the ACP were measured. The relationships among the paraclinoidal structures were assessed. The origin and projection of the ophthalmic artery (OA) were investigated. Results : The mean values of intradural basal width and height of the ACP were 10.82 mm and 7.61 mm respectively. The mean length of the C6 lateral and medial side increased 49%. The mean length of optic nerve increased 97%. At the parasellar area, the lengths from the optic strut to the falciform liament, distal dural ring, origin of OA were 6.69 mm, 9.36 mm and 5.99 mm, respectively. The distance between CN III and IV was 11.06 mm. Conclusion : With the removal of ACP, exposure of the C6 segments and optic nerve can expand 49% and 97%, respectively. This technique should be among a surgeon's essential skills for treating lesions around the parasellar area.

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참고문헌

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