A STUDY OF WORMIAN BONES IN NORTH INDIAN POPULATION
Journal Title: JOURNAL OF ANATOMICAL SCIENCES - Year 2017, Vol 25, Issue 1
Abstract
Introduction: Wormian bones are a subset of the small intrasutural bones that lie between the cranial sutures formed by the bones of the skull vault. They are formed due to additional ossification centres in or near sutures. They vary in size, shape and number. Wormian bones are the accessory bones which are usually not present in all normal skulls. The aim of the present study was to see the incidence, number and location of these accessory bones in human dry skulls. Material and Methods: The present study was carried out on 90 dry adult human skulls of unknown age and sex which were collected from osteology lab of Anatomy Department of King George’s Medical University, Lucknow, UP. The skulls were cleaned, dried properly and were looked for the presence of wormian bones in respect to its location and number. Observation & Results: In the present study, the incidence of Wormian bones was seen in 35 skulls (38.88%) out of 90 skulls. We found maximum number of Wormian bones at lambdoid suture i.e. 22 skulls (24.44%) on left side and 21 skulls (23.33%) on right side. We also found such bones at squamous suture i.e. 5 skulls (5.55%) on left side whereas 6 skulls (6.66%) on right side. It was observed at coronal suture in 1 skull (1.11%) on left side whereas 3 skulls (3.33%) on right side. Only one skull showed Wormian bones on sagittal suture bilaterally i.e. both on right (1.11%) and left side (1.11%). In our study, we didn’t find any accessory bones at asterion, occipitomastoid suture and near bregma. Conclusion: It is important to know about these bones because they can mislead in the diagnosis of fracture of skull bones. Radiologists and neurosurgeons should keep in mind about such occurrence of accessory bones before doing craniotomy surgeries.
Authors and Affiliations
Rakesh Dewan
Keywords
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