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VOLUME 3 , ISSUE 3 ( July-September, 2016 ) > List of Articles


Computerized Tomographic Morphometric Analysis of Subaxial Cervical Spine Pedicles in a South Indian Population for guiding Pedicular Mass Fixation

Nithin Asadhi, Narayan Gudi, Anil K Sakalecha, Arun Shanthappa, Hariprasad Seenappa

Citation Information : Asadhi N, Gudi N, Sakalecha AK, Shanthappa A, Seenappa H. Computerized Tomographic Morphometric Analysis of Subaxial Cervical Spine Pedicles in a South Indian Population for guiding Pedicular Mass Fixation. J Spinal Surg 2016; 3 (3):96-102.

DOI: 10.5005/jp-journals-10039-1099

Published Online: 01-09-2012

Copyright Statement:  Copyright © 2016; The Author(s).



Our hospital Sri RL Jalappa Hospital is located on the national highway in South India. We receive many patients with history of trauma following road traffic accidents and fall from height. Most of the patients have sustained injuries to head and spine including cervical spine. The general population also presents with neck pain of various etiologies (e.g., cervical myelopathy).


To assess the morphometry of the subaxial cervical spine pedicles through computerized tomography and to determine the frequency of neurovascular injuries in patients who undergo pedicular mass fixation in cervical spine.

Materials and methods

This study was a hospital-based prospective intervention study centered at RL Jalappa Hospital and Research Centre attached to Sri Devaraj Urs Medical College, Kolar, from November 2013 to July 2015 in which data of 200 patients who underwent computerized tomographic scans of the cervical spine and neck for various pathologies were collected and assessed.


The mean values of pedicle lengths and widths were found to be progressively increasing for both males and females from C3 to C6 vertebrae level and then slightly decreasing at C7 level. Also, it can be seen that the mean values for females are smaller than those for males, for both left and right side. We found that transverse and sagittal plane angulations were significantly dependent on spinal level. Transverse angulation was approximately 45° at C3 through C5 and decreased caudally to approximately 33° at C7 for both sexes.


Through this study we found that there is less significance in the demographic profile. There was a progressive increase in the lengths, widths, and height of the pedicles from C3 to C7 vertebra pedicle transverse angle. Though the literature describes the use of 3.5 mm cervical pedicular screws, Indian population will require a smaller size.

How to cite this article

Asadhi N, Gudi N, Sakalecha AK, Shanthappa A, Seenappa H. Computerized Tomographic Morphometric Analysis of Subaxial Cervical Spine Pedicles in a South Indian Population for guiding Pedicular Mass Fixation. J Spinal Surg 2016;3(3):96-102.

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