Incidence of Metopism in Adult Thai Skulls

Khamanarong, Kimaporn; Tuamsuk, Panya; Woraputtaporn, Worawut; Namking, Malivalaya; Sawatpanich, Tarinee; Toomsan, Yanyong; Iamsaard, Sitthichai

doi:10.4067/s0717-95022015000100008

Cited by 11 publications

(5 citation statements)

References 8 publications

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“…Previously, the patterns of pterion have been documented in various populations including Australian Aborigines (Murphy, 1956), Indians (Ahuja et al, 1971;Saxena et al, 2003;Natekar et al, 2010), North Indians (Agarwal et al, 1980;Seema & Mahajan, 2014), Japanese (Matsumura et al, 1991), Turks (Ersoy et al, 2003), Turkish (Oguz et al, 2004), Kenyas (Mwachaka et al, 2009), Gujurat (Zalawadia et al, 2010, Koreans (Lee et al, 2001), and Nigerians (Eboh and Obaroefe, 2014;Asala and Mbajiorgu, 1996). Although an incidence about skull morphology like the metopism, a rare variant suture persistence, in Northeastern Thais has been previously documented (Khamanarong et al, 2015), there is no later report about classification of pterion formation in our population. Therefore, this study aims to investigate the incidence and to classify the variations of the configuration of sutural pattern of pterion in Thai skulls.…”

Section: Introductionmentioning

confidence: 66%

Classification and Incidence of Pterion Patterns of Thai Skulls

Chaijaroonkhanarak¹,

Woraputtaporn²,

Prachaney³

et al. 2017

Int. J. Morphol.

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Morphol., 35(4):1239Morphol., 35(4): -1242Morphol., 35(4): , 2017. SUMMARY:The pterion, a landmark for neurosurgery, is the weakest part of the skull owing to relatively thin bone. Variant patterns of pterion can confuse the clinicians during diagnosis of the lateral skull fractures in emergency situations. Thedifferent pterion types of many races have been reported but not of Thais. In this study; therefore, we investigated the incidence of sutural pterion patterns on of Thai skulls. The infratemporal fossa of 110 sides from 55 dried skulls identified as Thais were observed and classified for individual pterion types. The results showed that the pterion patterns can be classified into 4 types; spheno-parietal (87.27 %), fronto-temporal (4.55 %), uni-epipteric (6.36 %), and multi-epipteric (1.82 %) types. It was found that the spheno-parietal type was dominant in males (61.81 %) than in females (25.45 %). The majority of the skulls showed bilateral symmetry (85.45 %) in all types and the unilateral ones were far less (14.55 %). In bilateral pterion incidence, the spheno-parietal type was approximately 93.61 % while the uni-epipteric type was not found. Moreover, the bilateral multi-epipteric type was found only in one female skull (2.13 %). These findings will be useful for the radiologists and the neurosurgeons concerning lateral skull fractures in emergency diagnosis KEY WORDS: Pterion; Spheno-parietal type; Fronto-temporal type; Uni-epipteric type; Multi-epipteric type.

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Section: Introductionmentioning

confidence: 66%

Classification and Incidence of Pterion Patterns of Thai Skulls

Chaijaroonkhanarak¹,

Woraputtaporn²,

Prachaney³

et al. 2017

Int. J. Morphol.

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“…But it is in contrast to the study conducted by Yadav et al (2010) (14.6%) and Santhosh et al (2014) (7%). Khamanarong et al, (2015) reported that the incidence of incomplete metopic suture of Thais was higher than that of the complete metopic suture with respect to sex, the metopic suture in both types is found to be higher in males than in females.…”

Section: Discussionmentioning

confidence: 91%

Forensic Study for Determination of the Incidence of Persistent Metopic (Frontal) Suture and Its Relation to Age and Sex Among Sample of Egyptian Skulls

Zanaty

2017

The Egyptian Journal of Forensic Sciences and Applied Toxicolog

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Introduction: At birth the frontal bone contains two portions, separated by the metopic (frontal) suture. Metopism is the condition of having a persistent metopic suture. Aim of the present study was to determine the incidence of persistence of metopic suture, their shape and its relation to age and sex in Egyptian human skulls. Material and Method: The study was conducted on 147 human dry skulls which belong to the museum of the department of Anatomy, Faculty of Medicine, Menoufia University. The metopic sutures were classified as complete and incomplete types. Incomplete metopic sutures were divided into three groups as present in the lower part of the frontal bone, in the upper part and in the middle part. The incomplete lower metopic sutures were further subdivided into linear, 'V' shaped and 'U' shaped. Results: From this study, absence metopic sutures were observed in 84 (57.1%) skulls, while it was present in 63 (42.9%) ones. The complete metopic suture (metopism) was seen in 12 (8.2%) skulls and incomplete one in 51 (34.7%). Among the incomplete ones, linear, 'U' and 'V' shaped was found in 36 (24.5%), 9 (6.1%), and 6 (4.1%), respectively. All incomplete metopic sutures were found in the lower part of frontal bone, but no suture remnant was found in the upper and middle part of frontal bone. Incomplete lower V shaped metopic suture presented in all female skulls. There were statistical significant relation between absent, complete, incomplete lower linear and incomplete lower V shaped metopic suture regarding age. Also there was statistical significant relation between metopism regarding age and sex. There was sensitivity and specificity for both age and sex with metopic suture. Conclusion and recommendation: The incidence of metopism was 8.2% while incomplete metopic sutures were 34.7%. This incidence may be valuable information for identification of the person and for radiologists and neurosurgeons in practice to concern about metopic suture in emergency diagnosis of frontal bone fractures.

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“…Apparently, the incidence of complete metopic suture in Indian individuals is also close to the studies mentioned above, including in national samples. In another study, carried out on the Asian continent, Khamanarong et al (2015) used 706 dried skulls of adults belonging to Thai individuals in order to verify the presence of metopism, among these 53 skulls (7.51%) had metopic sutures, 20 skulls with complete metopism…”

Section: Resultsmentioning

confidence: 99%

Incidence of metopism in dried skulls of adults from the osteological collection of the faculty of medicine of FAP-Araripina (PE)

Lima,

Oliveira,

Santos

et al. 2024

Health and Medicine: Science, Care, and Discoveries

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During fetal life and childhood, the bones of the skull and face are separated by dense connective tissue membranes with large amounts of collagen fibers that constitute the sutures. One of these is the metopic suture, which joins the two frontal bones in the embryonic period and in the newborn. This suture appears approximately at the end of the second month of intrauterine life between the two ossification centers of the frontal bone, being considered as an anterior extension of the sagittal suture and its total fusion can occur from the end of the first year to the eighth or tenth year of life. , and may persist in adults. The objective of our study was to verify the incidence of metopic suture in dry skulls of adults in the Northeast region of Brazil. A sample of 474 dry skulls of adults, 294 male and 180 female, belonging to the Forensic Anthropology Center of the Faculty of Medicine of FAP-Araripina was used. In general, 84.6% of the skulls did not have a persistent metopic suture, with 3.6% having a complete metopic suture, 10.3% an incomplete metopic suture of the nasion type and 1.5% an incomplete metopic suture of the nasion type. bregma type. Complete metopic suture was more frequent in males (2.3%) than in females (1.3%). Due to the large territorial extension of Brazil and the great miscegenation of the population, in our view, it is necessary to carry out more studies in Brazilian individuals through dry skulls or images, especially if carried out in different regions of our country.

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Incidence of Metopism in Adult Thai Skulls

Cited by 11 publications

References 8 publications

Classification and Incidence of Pterion Patterns of Thai Skulls

Classification and Incidence of Pterion Patterns of Thai Skulls

Forensic Study for Determination of the Incidence of Persistent Metopic (Frontal) Suture and Its Relation to Age and Sex Among Sample of Egyptian Skulls

Incidence of metopism in dried skulls of adults from the osteological collection of the faculty of medicine of FAP-Araripina (PE)

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