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 NI FEATURE: NORMATIVE DATA - ORIGINAL ARTICLE
Year : 2018  |  Volume : 66  |  Issue : 2  |  Page : 454--458

Morphometric analysis of cervical spinal canal diameter, transverse foramen, and pedicle width using computed tomography in Indian population


1 Department of Radiodiagnosis, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
2 Department of Pediatrics, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India

Correspondence Address:
Dr. Binit Sureka
Department of Radiodiagnosis, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi - 110 029
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0028-3886.227277

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Background: Accurate and detailed measurements of spinal canal diameter (SCD) and transverse foraminal morphometry are essential for understanding spinal column-related diseases and for surgical planning, especially for transpedicular screw fixation. This is especially because lateral cervical radiographs do not provide accurate measurements. Aim: This study was conducted to measure the dimensions of the transverse foramen sagittal and transverse diameters (SFD, TFD), SCD, and the distance of spinal canal from the transverse foramina (dSC-TF) at C1–C7 level in the Indian population. Materials and Methods: The study population comprised 84 male and 42 female subjects. The mean age of the study group was 44.63 years (range, 19–81 years). A retrospective study was conducted, and data were collected and analyzed for patients who underwent cervical spine computed tomography (CT) imaging for various reasons. Results: One hundred and twenty-six patients were included in the study. Detailed readings were taken at all levels from C1–C7 for SCD, SFD, TFD, and dSc-TF. Values for male and female subjects were separately calculated and compared. For both the groups, the widest SCD were measured at the C1 level and the narrowest SCD at the C4 level. The narrowest SFD was measured at C7 for both male and female subjects on the right and left sides. The widest SFD was measured at C1 both for male and female subjects on the right and left side. The narrowest TFD on the left side was measured at C7 for male and at C1 for female subjects. The narrowest mean distance of dSC-TF was found to be at C4 for both male and female subjects on both left and right side. Conclusion: The computed tomographic (CT) imaging is better than conventional radiographs for the preoperative evaluation of cervical spine and for better understanding cervical spine morphometry. Care must be taken during transpedicular screw fixation, especially in female subjects, more so at the C2, C4, and C6 levels due to a decrease in the distance of dSC-TF.






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