A Study on the Morphometric Asymmetry of Atlas Vertebrae
- Author:
Mohd Salahuddin A
;
Mukesh S
;
Binaya KB
;
Nilotpal C
- Publication Type:Journal Article
- Keywords:
anatomy;
asymmetry;
biomechanics;
cervical atlas;
morphometry
- MeSH:
Cervical Atlas
- From:Journal of Surgical Academia
2016;6(1):18-24
- CountryMalaysia
- Language:English
-
Abstract:
The commonly used examination procedures of the upper cervical spine depend upon the symmetry for comparison
and interpretation of joint functions. If symmetry is not normal, then these assessments may mislead the examiners,
allowing them implementation of incorrect treatment plans. Objectives of this study are to explore the possibility that
asymmetry is more common than symmetry and, if it is true, to find out the effects of asymmetry on the
biomechanics of these joints. The study was carried out on 30 atlas vertebrae of cadavers of Indian origin. The
different intra-atlas distances were measured on both sides by digital vernier calliper. All the parameters studied
showed statistically significant differences between the right and left side i.e. a p value of < 0.05. The anteroposterior
diameter of the foramen transversarium, the transverse diameter of the foramen transversarium, the distance
from the midline to medial edge of the vertebral artery groove (inner as well as outer cortex) and the length of the
superior articular facets were more on the right side as compared to the left side. The breadth as well as the length of
the inferior articular facet, the breadth of the superior articular facet and the difference of posterior arch thickness at
the site of vertebral artery groove were more on the left side as compared to the right side. These differences may be
explained by the handedness of an individual, which influences the intra-osteal asymmetry in a characteristically
distinct manner, which needs to be confirmed or refuted in a further study.
- Full text:P020160607330842397286.pdf
