Anatomic Features of Metopic Suture in Adult Dry Skulls

Aksu, Funda; Çırpan, Sibel; Mas, Nüket; Karabekir, Selim; Mağden, A.Orhan

doi:10.1097/scs.0000000000000564

Cited by 12 publications

(9 citation statements)

References 7 publications

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“…). This variations in shape are similar to the shapes observed by Murlimanju et al, of Indian skulls studied[22], Aksu et al, of Turkish West Anatolian skulls studied[33] and Castilho et al, of Brazilian skulls studied[15]. Variations like H-shaped, Y-shaped and inverted 'U-shaped'…”

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confidence: 87%

Metopism: Its Prevalence and Morphometry in Adult Nigerian Dry Skulls

Edibamode

Bob-Manuel

2023

AJOB

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Background: Metopic suture also known as the frontal, interfrontal, or median frontal suture is formed in the midline at the meeting of the two halves of the frontal bone. Normally it gets obliterated by early childhood, but in some cases, it persists and is described as metopism. This study is aimed at investigating metopism prevalence in dry Nigerian skull. Methods: This study was conducted on ninety-six (65 males and 31 females) adult Nigerian dry skulls from 5 selected Universities in the Southern part of Nigeria. Metopic suture (metopism) was considered to be complete when it continued uninterruptedly from the nasion to the bregma and incomplete when it was not present over its entire length. The incomplete metopic sutures were further classified into shapes. Results: Metopism was observed in 31 skulls (32.3%) of which 22 (21.9%) were males and 9 (9.4%) were females. Complete metopic suture was found in only 1 skull (1.04%) and incomplete metopic suture was seen in 30 skulls (31.25%). Among the incomplete ones, linear shape metopic suture was the most common in 16 skulls (16.67%). 7 (7.29%) were V-shaped metopic suture and another 7 (7.29%) were double-type metopic suture. Prevelence of metopic suture was slightly higher in males than in females. However, there was no statistical level of association with respect to sexual dimorphism. Conclusion: The prevalence and morphometry of metopism in the 96 adult Nigerian skulls studied, revealed complete metopism to be 1.04% with a length of 127.0mm as against incomplete metopism of 31.25% making a total prevalence of 32.29%. The prevalence of metopic suture was slightly higher in males than in females with the linear metopic suture occurring the most. Sexual dimorphism with respect to incomplete metopism types and shapes revealed no association This study is important for radiologists and neurosurgeons in diagnosis of frontal bone fractures and during surgical intervention including frontal craniotomy.

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confidence: 87%

Metopism: Its Prevalence and Morphometry in Adult Nigerian Dry Skulls

Edibamode

Bob-Manuel

2023

AJOB

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“…The MS may reside as a partial pattern or a complete pattern. The partial patterns expand upward from the nasion or downward from the bregma, different from the completes spanning from the bregma to the nasion [11,24,25]. The suture forms from the bregma and performs toward the nasion.…”

Section: Discussionmentioning

confidence: 95%

A case of atlanto-occipital fusion with other multiple anatomic variations

Yang

Liao

et al. 2022

Folia Morphol

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In the routine anatomic measurement study on Asian dry skulls, a skull of atlantooccipital fusion with other multiple anatomic variations was observed. The entire right half of the atlas vertebra, including the anterior arch, anterior tubercle, posterior arch, and lateral masses, was fused entirely with the occipital bone, while the left fused partly.Besides the atlanto-occipital fusion, the target skull specimen also includes posterior arch defects of the atlas, metopic suture, wormian bones. So many anatomy variations rarely exist in one specimen. This paper aims to present detailed anatomic case reports and discuss related diseases in an anatomic and clinical study.

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“…The incidence of the persistent metopic suture, reported by previous studies, was found to be 1.8% in Lebanese, 3.3% in British, 7.5% in Northeastern Thai, 7.0 -9.7% in Brazilian, 2.0 -85.0% in Indian subpopulations, 11.5% in Nepalese, 35.0% in Nigerians, and 3.3 -75.0 % in Anatolian. The incomplete type is more commonly found than the complete type (Berry, 1975;Ajmani et al, 1983;Baaten et al, 2003;Bilodi et al, 2003;Castilho et al, 2006;Eroğlu, 2008;Hussain Saheb et al, 2010;Manalgiri et al, 2010;Yadav et al, 2010;Chandrasekaran and Shastri., 2011;Murlimanju et al, 2011;Chakravarthi and Venumadhav, 2012;da Silva et al, 2013;Nallathamby et al, 2013;Masih et al, 2013;Pilli and Sunder, 2013;Aksu et al, 2014;Khandare et al, 2014;Kumar and Rajasekar, 2014;Saikia 2014;Santhosh et al, 2014;Wadekar et al, 2014;Arumugam and Arrchana, 2015;Basha and Sugavasi, 2015;Khamanarong et al, 2015;Kumar and Rajshekar, 2015;Hemalatha and Rao, 2016;Nayakanati et al, 2016;Kundu et al, 2017. Shrestha et al, 2017Singh et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Coexistence of Complete Metopic Suture and Inca Bone in Thai Skulls: Incidence, Morphology and Clinical Applications

Pakdeewong¹,

Tohno²

2019

CMUJNS

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The incidence of the cranial variations has been investigated in human populations worldwide. Some specific variations, such as metopic suture and Inca bone, are of clinical importance since they might be misdiagnosed as skull fractures in patients with traumatic head injury. The purpose of this study is to investigate the incidence and morphology of the metopic suture and Inca bone in Thai skulls. The crania from the skeleton collection of the Department of Anatomy, Faculty of Medicine, Chiang Mai University, were examined. From our observation, 7.3% presented with metopic suture; the incomplete type was found in 6.0% and the complete type was found in 1.3%. Different types of the Inca bone were also detected in 2.0%. Among these, 2 skulls happened to coexist with the complete metopic suture and multiple ossicles. The combination of multiple variations in a single braincase is rare. Therefore, the morphometric data and radiography of both skulls were later recorded. The external morphology of such variations mimicked the skull fracture. The cranial radiographs revealed that the metopic suture and additional bones appeared to have sclerotic margins which cannot be found in fractured skull. The physician should take these variations into account to avoid unnecessary management in patients with a history of head trauma. Concerning its uniqueness, it might also be a useful tool as personal identification in forensic medicine by comparing skulls with the antemortem radiographs.

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Anatomic Features of Metopic Suture in Adult Dry Skulls

Cited by 12 publications

References 7 publications

Metopism: Its Prevalence and Morphometry in Adult Nigerian Dry Skulls

Metopism: Its Prevalence and Morphometry in Adult Nigerian Dry Skulls

A case of atlanto-occipital fusion with other multiple anatomic variations

Coexistence of Complete Metopic Suture and Inca Bone in Thai Skulls: Incidence, Morphology and Clinical Applications

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