Morphometric Analysis Of The Axis For Atlantoaxial Fixation

The aim of the study was to evaluate the morphometric parameters of the axis vertebra (C2) in the Mexican population involved in the performance of surgical procedures in order to provide essential quantitative data in their surgical approach. A total of 576 axis vertebrae (C2) of contemporary Mexican population were used for this study. The measurements of the vertebrae were made bilaterally using a millimeter digital vernier with an accuracy of 0.01 millimeters (Mitutoyo Digimatic w / Absolute Encoders - Series 500). A total of 576 axis vertebrae (C2) were measured bilaterally, all our measurements were reported in millimeters. The average width of the pedicle was 8.96 mm with a SD +/- 2.11 mm. The average height of the pedicle was 10.82 mm with a SD of +/- 1.89 mm. The average height of the odontoid process was 16.90 mm with a SD of +/- 2.99 mm. The average width of the odontoid process was 9.99 mm with a SD of +/- 0.80 nun. The average diameter of the articular facet was 8.44 mm with a SD of +/- 1.04 mm. The average diameter of the AP of the vertebral body was 15.11 mm with a SD of +/- 1.88 mm. The average transverse diameter of the vertebral body was 17.93 mm with a SD of 2.22 mm. The average height of the vertebral body was 18.54 mm with a SD of 2.38 mm. The average height of the lamina was 11.53 mm with a SD of +/- 1.39 mm. The average width of the lamina was 6.10 mm with a SD of +/- 1.44 nun. The results obtained in our measurements show a variation with the results of other authors in different studies of osteological pieces and studies of the axis image (C2), which suggests the use of techniques and special measures for the atlantoaxial stabilization of the Mexican population in order to reduce the risk of damage to neurovascular structures.