Morphological study of Metopic suture in adult South Indian skulls

Kosuri Kalyan Chakravarthi · Venumadhav Nelluri · Pinnamaneni Siddhartha · Gannavaram Mandal

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Forensic Anthropology and Bioarchaeology Studies Medical and Biological Sciences Craniofacial Disorders and Treatments

Abstract

The metopic suture is formed at the meeting of the two halves of the frontal bone, in the midline. Normally it starts to close in the second year of life and within a short duration, gets completely obliterated. The time of the closure of metopic suture varies from one to eight years and it can persist until adult age. The present study was undertaken to observe the incidence of Metopic suture and Metopism in the adult human skulls of South India. This study was carried out on 80 dry human skulls at Dr. Pinnamaneni Siddhartha institute of medical sciences & research foundation (Dr. PSIMS & R.F) Gannavaram; Krishna Dist; A.P and MMMC, Manipal, Karnataka (INDIA). Metopism was found in 6.25% of the studied skulls. The incomplete metopic suture was found in 38%. Morphology of sutures varied from linear (18.75%), 'U' shaped (10%) and 'V' shaped (10%), of which linear was found to be most common. The morphological knowledge of the metopic suture is important for the radiologists and neurosurgeons in day-to- day practice.

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References

2001Frequency variations of discrete cranial traits in major human populations. II. Hypostotic variations 1983Incidence of the metopic suture in adult Nigerian skulls.2001Frequency variations of discrete cranial traits in major human populations. I. Supernumerary ossicle variations 1979Incidence of the metopic suture in adult Indian crania 1949Racial and sexual differences in the frontal curvature and its relation to metopism 1991Size and shape of human cranial sutures–A new scoring method 2008The frequency of metopism in Anatolian populations dated from the Neolithic to the first quarter of the 20th century 2004A note on the morphology of the metopic suture in the human skull.

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2016Two cases of large bregmatic bone along with a persistent metopic suture from necropoles on the northern Black Sea coast of Bulgaria

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