Type of Article:  Original Research

Volume 5; Issue 1 (January 2017)

Page No.: 3443-3446

DOI: https://dx.doi.org/10.16965/ijar.2016.499


Surendra Kumar Sah *1,   Deepak Chaudhary 1, Nivedita Pandey 2.

1  Department of Anatomy,  Nobel Medical College,  Biratnagar,  Nepal.

2  Department of Anatomy,  BP Koirala Institute of Health Sciences, Dharan, Nepal.

*Corresponding Author: Mr. Surendra Kumar Sah, Assistant Professor,  Dept. of Anatomy,  Nobel Medical College,  Biratnagar,  Nepal. E-Mail: suren.anat2010@gmail.com


Introduction:  Metopism is partial or complete persistence of suture in the frontal bone extending from the nasion to the anterior angle of the bregma. Wormian bones are the extra irregular and isolated pieces of bones also known as intrasutural bones which appears in addition to the usual centres of ossification within the sutures of cranium. The formation of these bones are associated with the decreased rate of suture closure and considered as the hypostatic and epigenetic traits.

Materials and Methods:  The present study was conducted on 80 dry skulls  collected from  the Department of Anatomy, Nobel Medical College,  Biratnagar and BPKIHS, Dharan dated from April 2016 to July 2016.

Results: Out of 80 skulls, in three skulls (3.75%) complete  metopic sutures (metopism) were found. The wormian bones were observed in 55 skulls (68.75%). Out of 55 skulls with wormian bones, 35 (63.63%) skulls showed wormian bones at the lamboidal suture, at the asterion in 11 (20%) skulls, at the pterion in 7 (12.72%) skulls, at saggital suture in two (3.63%) skull, none of the skulls showed the wormian bones at coronal suture and bregma.

Conclusion: From the study it can be concluded that the study may be useful for the clinical diagnostic purpose particularly  during frontal craniotomy. The knowledge of wormian bones may also play a major role for the neurosurgeons, neuro-anatomists, radiologists, anthropologists and morphologists.

Key words: Astrion, Bregma, Lamboidal suture, Metopism, Pterion, Trauma, Wormian bones.


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Cite this article: Surendra Kumar Sah, Deepak Chaudhary, Nivedita Pandey. STUDY OF METOPISM AND WORMIAN BONES IN DRY SKULLS OF HUMAN CADAVERS IN NEPAL. Int J Anat Res 2017;5(1):3443-3446. DOI: 10.16965/ijar.2016.499