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ORIGINAL ARTICLE
Year : 2021  |  Volume : 69  |  Issue : 4  |  Page : 925--930

Morphometric Analysis of C2 Pedicle in 247 Patients and Proposal for Trajectory and Size of Pedicle Screw

Mohit Agrawal1, Leve J Devarajan2, Sundarakrishnan Dharanipathy1, Varidh Katiyar1, Pankaj K Singh1, Ajay Garg2, P Sarat Chandra1, Shashank S Kale1 
1 Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
2 Department of Neuroradiology, All India Institute of Medical Sciences, New Delhi, India

Correspondence Address:
Dr. Pankaj K Singh
Department of Neurosurgery, Room No. 717, Neurosciences Center, All India Institute of Medical Sciences, New Delhi - 110 029
India

Background: Screw diameters are currently available based on the literature available for the Western population. No data are available in such a large number of patients for the Indian population. Objective: The aim of this study was to define the average pedicle size available and to determine the angulation for placement of screws for C2 pedicle in the Indian population. We also try to determine the pedicle screw diameter which can be used universally in most Indian patients, considering the pedicle dimensions. Material and Methods: Retrospective morphometric analysis of CT scans of 247 patients (152 M, 95 F) was done to calculate the C2 pedicle width (PW), pedicle height (PH), pedicle length (PL), pedicle transverse angle (PTA) and the craniocaudal angulation (CCA) of the C2 pedicle. Results: Mean PW in females was 5.3 mm and in males it was 5.9 mm. This difference was statistically significant. The mean PH in the study population was 8.9 mm, while the mean PL was 29.7 mm. The mean PTA was 40.0 degrees and the CCA was 28.4 degrees. Conclusion: This is a morphometric analysis of the C2 pedicle which provides information for the surgeons to determine the safe site of entry and trajectory for the screw implantation. We conclude that a screw diameter of 2.7 mm can be safely implanted in a vast majority of the patient population.


How to cite this article:
Agrawal M, Devarajan LJ, Dharanipathy S, Katiyar V, Singh PK, Garg A, Chandra P S, Kale SS. Morphometric Analysis of C2 Pedicle in 247 Patients and Proposal for Trajectory and Size of Pedicle Screw.Neurol India 2021;69:925-930


How to cite this URL:
Agrawal M, Devarajan LJ, Dharanipathy S, Katiyar V, Singh PK, Garg A, Chandra P S, Kale SS. Morphometric Analysis of C2 Pedicle in 247 Patients and Proposal for Trajectory and Size of Pedicle Screw. Neurol India [serial online] 2021 [cited 2021 Dec 6 ];69:925-930
Available from: https://www.neurologyindia.com/article.asp?issn=0028-3886;year=2021;volume=69;issue=4;spage=925;epage=930;aulast=Agrawal;type=0