https://www.ijmhr.org/ijar.htm editor_anatomy@ijmhr.org
ISSN:       2321-4281 (E) 2321-8967 (P)

IJAR.2016.499

DOWNLOAD PDF
Table of Contents

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

STUDY OF METOPISM AND WORMIAN BONES IN DRY SKULLS OF HUMAN CADAVERS IN NEPAL

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

ABSTRACT:

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.

REFERENCES

  1. Arumugam, S. Arrchana. Morphometric study of Metopism in Human Adult Dry skulls; IOSR-JDMS 2015;10-15.
  2. Frazer’s. Anatomy of Human Skeleton edited by Breathnach. A.S-6th edition, JA Churchill limited- London, 1965;182-85.
  3. A.C, Saxena. R,et al. Incidence of metopic sutures in UP Subjects- J. Anatomical Society India 1973;22(4):140-4.
  4. Arumugam, S.Arrchana. Morphometric study of Metopism in human adult dry skulls; IOSR-JDMS 2015;10-15.
  5. Hamilton WJ. Metopic sutures in skull.In Hamilton WJ, eds. Textbook of Human Anatomy. 2nd London: Macmillan & co.;1976:60.
  6. Sanchez-Lara P A., Graham Junior J M., Hing A A., Lee J. and Cunninggham M. (2007); The morphogenesis of Wormian bones: A study of craniosynostosis and purposeful cranialdeformation. American Journal of Medical Genetics Part A. 2007;143A(24):3243-3251. PMID: 18000970.
  7. Barberini, F., Bruner, E., et al. An unusually wide human bregmatic Wormian bone: anatomy, topographic description and possible significance. Surgical and Radiologic Anatomy, 2008;30(8):683-87.
  8. Jeanty, P.,Silva, SR and Turner C. Prenatal diagnosis of Wormian bones. Journal of Ultrasound in Medicine 2000;19(12):863-69. PMID: 11127012.
  9. Bilodi AK, Agrawal BK, Mane S, Kumar A. A study of metopic sutures in human skulls. Kathmandu Univ Med J; 2003;2:96-9.
  10. Das AC., Saxena. R., et al. Incidence of metopic sutures in UP subjects. J. Anat. Soc.India. 1973;122(4):140-4.
  11. Dixit C.S. & Shukla PL. Metopic sutures in human cranium. J. Anat. Soc. India. 1968;17:47.
  12. Inderjit and Shah M.A. Incidence of frontal or metopic sutures amongst Punjabi adults I.M. Gazette. 1948;83:507-8.
  13. Barberini F., Bruner E., Cartolari R. et al. An unusually –wide human bregmatic Wormian bone: anatomy tomographic description and possible significance. Surgical and radiologic Anatomy. 2008;30:683-87. PMID: 18523715.
  14. Bennet KA. The etiology and genetics of wormian bones. American Journal of physical Anthropology, 2005;23(3):255-60.
  15. EL-Najjar, MY. And Dawson GL. The effect of artificial cranial deformation on the incidence of Wormian bones in the lamboidal suture. American Journal of Physical anthropology. 1977;46(1):155-60. PMID: 835687.
  16. Sanchez-lara, PA., Graham Junior, JM., et The morphogenesis of wormian bones: a study of craniosynostosis and purposeful cranial deformation. American journal of Medical genetics part A, 2007;143A(24):3243-51. PMID: 18000970.
  17. Parker, CA. wormian bones. Chicago: Robert press 1905.
  18. Ersoy , M., Evliyaoglu, C., Bojkurt, MC., et al. Epipteric bones in the pterion may be a surgical pitfall. Minimally invasive Neurosurgery. 2003;48(6):383-85.
  19. Brothwell., DR. Digging up bones. London : British Museum of Natural History 1963.

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