Anatomical Evaluation of the Pedicle of the Axis Through Computerized Tomography in Adults

Abstract

Objectives: The topography of the high cervical spine involves several traumatic, degenerative, and rheumatologic pathologies. With the evolution of surgical techniques and synthesis materials available for use in such region, an optimization of the anatomical understanding of this area is required. Methods: Therefore, this study evaluated 62 computed tomographies of the high cervical spine in an adult population, aiming at the study of the anatomical parameters of the axis pedicle. The measures analyzed in this observational study were pedicle length at axial section, pedicle length at sagittal section, pedicle thickness at axial section and interpedicular angulation. Results: Computed tomography is a necessary exam for the programming of C2 pedicle screws and is useful for determining the anatomical changes and evaluating the length of the screws that will be used. Furthermore, no statistically significant difference was observed in the length, angulation, and diameter of the pedicles of the axis in relation to sex or age. Conclusion: Regarding sex and age, no statistically significant difference on length, angulation, and pedicle diameter occur. There is an urgent need for computed tomography for surgical planning. Level of Evidence II; Transversal Diagnostic Studies – Investigation of a Diagnosis Test.

Morphometric Study of the C6 and C7 Pedicle: A Computerized Tomography Analysis

“…At C7, the vertebral artery has a path outside the transverse foramen in 95% of patients, making the procedure safer regarding the risk of arterial injury. [8][9][10] Due to the importance of vertebral pedicle morphometry, the present study aims to measure the pedicles of C6 and C7 in Brazilian adult patients using CT scans.…”