Journal of Morphological Sciences
http://www.jms.periodikos.com.br/article/587cb49d7f8c9d0d058b4797
Journal of Morphological Sciences
Original Article

Morphological and topographical study of Wormian bones in cadaver dry skulls

B.V. Murlimanju; Latha V. Prabhu; C. Mohammed Ashraf; C. Ganesh Kumar; Rajalakshmi Rai; C. Maheshwari

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Abstract

Introduction: The Wormian bones are formations associated with insufficient rate of suture closure and regarded as epigenetic and hypostotic traits. It was reported that there exists racial variability among the incidence of these bones. In the present study, the aims were to find the incidence of Wormian bones in Indian skulls and to analyze them topographically. Material and methods: The study included 78 human adult dry skulls of Indian population which were obtained from the neuroanatomy laboratory of our institution. They were macroscopically observed for the incidence and topographical distribution of the Wormian bones. Results: The Wormian bones were observed in 57 skulls (73.1%) of our series. Remaining 21 skulls (26.9%) didn’t show these variant bones. They were observed at the lambdoid suture in 56.4% cases (44 skulls; 14-bilateral; 18-right side; 12-left side), at the asterion in 17.9% (14 skulls; 3-bilateral; 2-right side; 9-left side), at the pterion in 11.5% (9 skulls; 4-right side; 5-left side), at the coronal suture in 1.3% (only one skull) and at the sagittal suture in 1.3% cases (only one skull). Conclusion: The current study observed Wormian bones in 73.1% of the cases from Indian population. This incidence rate is slightly higher compared to other reports and may be due to racial variations. These variant bones were more frequently seen at the lambdoid suture and were rare at the coronal and sagittal sutures. We believe that the knowledge of Wormian bones is of importance to the neuroanatomists, neurosurgeons, radiologists, anthropologists and morphologists.

Keywords

coronal suture, lambdoid suture, morphology, sagittal suture, Wormian bones
587cb49d7f8c9d0d058b4797 jms Articles
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