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논문 기본 정보

자료유형
학술저널
저자정보
Nirmal D Patil (Orthopaedics King Edward Memorial Hospital) Sudhir K Srivastava (Orthopaedics King Edward Memorial Hospital) Sunil Bhosale (Orthopaedics King Edward Memorial Hospital) Shaligram Purohit (Orthopaedics King Edward Memorial Hospital)
저널정보
대한척추외과학회 Asian Spine Journal Asian Spine Journal Vol.12 No.1
발행연도
2018.1
수록면
18 - 28 (11page)

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Study Design: This was a double-blinded cross-sectional study, which obtained no financial support for the research. Purpose: To obtain a detailed morphometry of the lateral mass of the subaxial cervical spine. Overview of Literature: The literature offers little data on the dimensions of the lateral mass of the subaxial cervical spine. Methods: We assessed axial, sagittal, and coronal computed tomography (CT) cuts and anteroposterior and lateral X-rays of the lateral mass of the subaxial cervical spine of 104 patients (2,080 lateral masses) who presented to a tertiary care public hospital (King Edward Memorial Hospital, Mumbai) in a metropolitan city in India. Results: For a majority of the parameters, males and females significantly differed at all levels (p <0.05). Females consistently required higher (p <0.05) minimum lateral angulation and lateral angulation. While the minimum lateral angulation followed the order of C5<C4<C6<C3, the lateral angulation followed the order of C3<C5<C4<C6. The lateral mass becomes longer and narrower from C3 to C7. In axial cuts, the dimensions increased from C3 to C6. The sagittal cut thickness and diagonal length increased and the sagittal cut height decreased from C3 to C7. The sagittal cut height was consistently lower in the Indian population at all levels, especially at the C7 level, as compared with the Western population, thereby questioning the acceptance of a 3.5-mm lateral mass screw. A good correlation exists between X-ray- and CT-based assessments of the lateral mass. Conclusions: Larger lateral angulation is required for Indian patients, especially females. The screw length can be effectively calculated by analyzing the lateral X-ray. A CT scan should be reserved for specific indications, and a caution must be exercised while inserting C7 lateral mass screws.

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