Morphometric Analysis of Cervical Spine Pedicles in an Indian Population

JOURNAL TITLE: The Journal of Spinal Surgery

Author
1. Sarvdeep S Dhatt
2. Sajeeb Rijal
3. Mahesh Prakash
ISSN
2349-0462
DOI
10.5005/jp-journals-10039-1167
Volume
5
Issue
1
Publishing Year
2018
Pages
4
Author Affiliations
    1. Department of Orthopedic Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
    1. Department of Orthopedic Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
    1. Postgraduate Institute of Medical Education and Research Chandigarh
    2. Postgraduate Institute of Medical Education and Research, Chandigarh, India
    3. PGIMER, Chandigarh, India
  • Article keywords
    Cervical pedicle, Cervical pedicle screw, Pedicle morphometry

    Abstract

    Introduction: The quantitative understanding of cervical pedicle morphology minimizes the injury to the neurovascular structure and improves the surgical outcome. The aim of this study was to investigate the morphometry of the cervical pedicle using computed tomography (CT) scans. Materials and methods: The CT scan was performed in eleven cervical spine injury patients and the axial and sagittal images were used to calculate the four linear parameters—outer pedicle width (OPW), inner pedicle width (IPW), pedicle height (PH), pedicle axis length (PAL), and the pedicle transverse angle (PTA). Results: A total of 110 pedicles were measured and studied. The mean OPW, IPW, and PH showed gradual increase of the value from C3 to C7. The PTA showed maximum value at C4 vertebra and minimum value at C7 vertebra. Conclusion: The study demonstrated that pedicle dimensions were small in comparison to European and other Asian populations. To enhance the safety of cervical pedicle screw insertion, the pedicle dimensions and trajectories should be determined individually. The screw diameter should also be optimal to avoid pedicle violations because of narrow OPW in our study population.

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