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논문 기본 정보

자료유형
학술저널
저자정보
Kim, Young-June (Department of Neurosurgery Gangneung Asan Hospital, College of Medicine, University of Ulsan) Rhee, Woo-Tack (Department of Neurosurgery Gangneung Asan Hospital, College of Medicine, University of Ulsan) Lee, Sang-Bok (Department of Neurosurgery Gangneung Asan Hospital, College of Medicine, University of Ulsan) You, Seung-Hoon (Department of Neurosurgery Gangneung Asan Hospital, College of Medicine, University of Ulsan) Lee, Sang-Youl (Department of Neurosurgery Gangneung Asan Hospital, College of Medicine, University of Ulsan)
저널정보
대한신경외과학회 대한신경외과학회지 대한신경외과학회지 제44권 제1호
발행연도
2008.1
수록면
15 - 18 (4page)

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Objective : C2 laminar screw fixation is considered as an excellent alternative to Magerl's transfacetal approach or Harms construct for the atlantoaxial stabilization. However, to our knowledge, there is no report on the feasibility of the new approach to Korean population. We investigated morphometric parameters of the dorsal arch of the C2 to provide the quantitative data for the feasibility of laminar screw fixation. Methods : One-hundred-and-two patients' cervical computed tomography had been reconstructed and investigated on the anatomical parameters related with C2 laminar screw placement. Sixty patients were male and forty-two patients were female. Measurements included the laminar thickness and slope, spino-laminar angle, and maximal screw length. Results : Ages ranged from 20 to 81 and the mean age was 48.4. Mean laminar thickness was 5.7 mm (${\pm}1.0$) (5.8 mm in male and 5.4 mm in female). Fifty-one patients (50%) had a laminar thickness smaller than 5.5 mm at least unilaterally, therefore the patients were considered as inappropriate candidates for the laminar screw fixation in the smaller side of the laminae. Mean value of maximal length of screw was 33.3 mm (34.3 mm in male and 31.9 mm in female). Mean spino-laminar angle was $43.2^{\circ}$ and mean slope angle was $32.9^{\circ}$. Conclusion : Half of patients had inappropriate laminar profiles to accommodate a 3.5 mm screw in at least one side of the axis. The three-dimensional computed tomography reconstruction is mandatory for the preoperative assessment for the feasibility of the C2 lamina.

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