scholarly journals A STUDY ON THE OCCURRENCE OF WORMIAN BONES IN ADULT DRY SKULLS

2020 ◽  
Vol 8 (4.2) ◽  
pp. 7814-7816
Author(s):  
Asharani S K ◽  
Keyword(s):  
Coronal Suture ◽  
Normal Variation ◽  
Sagittal Suture ◽  
Medical Sciences ◽  
Wormian Bone ◽  
Lambdoid Suture ◽  
Wormian Bones ◽  
Normal Individuals ◽  
Topographical Distribution ◽  
Human Skulls

Background: Sutural or wormian bones are islands of bone that are commonly found in the sutures of the skull mainly along the lambdoid suture. These sutural bones which are irregular in size, shape and number may arise from separate centres of ossification. The prior knowledge about the Wormian bones is important because they are present in normal individuals as well as in various disorders such as osteogenesis imperfect, rickets, etc. Aim: To study the occurence of wormian bones in adult dry skulls Materials and Methods: The present study was carried out on 95 adult dry human skulls in the department of Anatomy, Adichunchanagiri Institute of Medical Sciences, B G Nagara. Skulls with fractures and deformities were excluded from the study. Intact skulls were cleaned thoroughly and observed for the presence of wormian bones along the sutures of skull. Results: Out of 95 skull bones studied, 24 (25.26%) skulls showed the presence of wormian bones. We also observed that maximum number of such bones (single or multiple) were present along the lambdoid suture followed by lambda, asterion, sagittal suture & coronal suture. A very small wormian bone was also found near the bregma of the skull. Conclusion: The awareness about the occurrence of wormian bones and their topographical distribution will guide the clinicians mainly neurosurgeons in their practice. These bones mimic fracture lines in radiograph; therefore radiologists must also be aware of this normal variation. KEY WORDS: Wormian bone, Lambdoid suture, skull.

scholarly journals Existence of Enlarged Parietal Foramina in Bone Collections

2018 ◽  
Vol 35 (02) ◽  
pp. 125-128
Author(s):  
Carolina Magalhães ◽  
Maria Ferreira ◽  
Rita Reis ◽  
Fernanda Silva ◽  
Taciana Santos ◽  
...  
Keyword(s):  
Parietal Bone ◽  
Human Bone ◽  
Coronal Suture ◽  
Sagittal Suture ◽  
Intense Pain ◽  
Light Pressure ◽  
Lambdoid Suture ◽  
Forensic Research ◽  
Parietal Foramen ◽  
Low Incidence

Introduction The enlarged parietal foramen (EPF) is a defect in the ossification of the parietal bone that is well described in the literature using a variety of nomenclatures. Individuals with EPF can present symptoms such as migraines, vomiting and intense pain when light pressure is applied to the skull. However, it can go unnoticed for a lifetime. Materials and Methods At the Human Bone Collection department of the Universidade Federal de Pernambuco, 2 craniums (CAV 90, 96 years old and CAV 16, 81 years old) and were identified as having EPF, both from females. Results There was no apparent kinship between both craniums. The sagittal length, the coronal width, the sagittal suture distance, the coronal suture distance and the lambdoid suture distance of each enlarged parietal foramen were evaluated, with the following results: sagittal length: 5.5 cm (CAV 90), and 5.0 cm (CAV 16); coronal width: 3.1 cm (CAV 90),and 3.4 cm (CAV 16); sagittal suture distance: 2.9 cm (CAV 90), and 2.3 cm (CAV 16); coronal suture distance: 1.8 cm (CAV 90), and 4.6 cm (CAV 16); and lambdoid suture distance: 5.0 cm (CAV 90), and 3.0 cm (CAV 16). The parietal foramen of both craniums exhibited equivalent measurements. Conclusion Due to the low incidence of EPF, the identification of the 2 craniums with this condition in a collection of 105 skeletons makes the discovery relevant. In reference to craniums exhibiting EPF, this is an important tool for study and forensic research, since its appearance is linked to heredity.

Wormian bones: shape, location and relation to each other

2021 ◽  
Vol 2 (1-2) ◽  
pp. 86-91
Author(s):  
Shadlinski V.B. ◽  
Abdullayev A.S.
Keyword(s):  
Temporal Bone ◽  
Occipital Bone ◽  
Sphenoid Bone ◽  
Sagittal Suture ◽  
Lambdoid Suture ◽  
Triangular Shape ◽  
Wormian Bones ◽  
The Right ◽  
Parietal Bones ◽  
Greater Wing

The material of the study was the skull of an 8-year-old girl. In the cranioscopy, the following were identified: on the right side, the bone of the sphenoid fontanel or epipteric bone; bones of lambdoid suture - on the right side in the amount of 5, on the left side -1 bone; preinterparietal bone, ospreinterparietale.By the craniometric method, the height and width of the bones were determined. The bone of the sphenoid fontanelle or epipteric bone is located between the frontal, parietal bones, the greater wing of the sphenoid bone, and the squama of the temporal bone. The width of the epipteric bone is 16.5 mm, height 9.5 mm. The bones of the lambdoid suture in the amount of 5 on the right and the 1st on the left were located in an elongated state.The largest bone was located in the middle of the right lambdoid suture; apparently, it was formed by the union of at least two Wormian bones. Preinterparietal bone has a triangular shape, the base of the triangle facing the sagittal suture, the tip, slightly rounded - in the direction of the occipital bone. The lateral angles of the preinterparietal bone are serrated, which, in principle, clearly distinguishes it from the parietal bones. The bone was single, no sutures or grooves dividing the preinterparietal bone into parts were observed. The width of the bone is 18.5 mm, height 13.8 mm.

scholarly journals Inconstant bones of the human skulls from scythians grave field near Kolomak village

2020 ◽  
Keyword(s):  
Anatomical Variations ◽  
Individual Variability ◽  
Sagittal Suture ◽  
Human Skull ◽  
Additional Information ◽  
Wormian Bones ◽  
Modern Classification ◽  
Human Skulls ◽  
Variant Anatomy ◽  
Skull Bones

Summary: The research of the features of variant anatomy, as an integral part of paleoanthropological exploration, is an extremely important source of additional information about the anatomical structure of humans. Рatterns of variability and frequency distribution of discrete variational features in variant anatomy remain important. Cranioscopic variational (or non-metric) features - anatomical variations in the skeleton structure, registered according to the “presence-absence” principle, are an important source of information in studying the origin and ethnogenetic relationships of paleopopulations. These features include inconstant (additional) skull bones. By modern classification, there are three types of inconstant bones of the human skull: wormian (sutural) bones, fontanelle bones and insular bones. They have various causes: genetic factors, chronic high intracranial pressure, skull deformation, disturbances of the skull symmetry, different pathological processes, etc. The purpose of the work was to research the variant anatomy of inconstant bones of the human skull. The objective to research is the variant anatomy of inconstant skull bones of the human on the anthropological materials from the Scythian grave field. It located near Kolomak village in the Kharkiv region and dates back to IX – IV century BC. The 88 skulls of adult persons has been researched. The inconstant additional bones of skull were present in the structures of 16 skulls out of 88 (18.1%). Results. The sutural (wormian) bones were present in 12 skulls (13.6%), fontanelle bones – in 6 skulls (6.8%), insular bones were absent. In the anatomical structures of 10 skulls (11.4%) were only wormian bones, in 4 skulls (4.5%) were only fontanelle bones, in the structures of 2 skulls (2.3%) were combination of sutural and fontanelle additional bones. Often the inconstant bones were located in several sutures at the same time. The most common sutural bones were lambdoid suture bones - 9 skulls (10.2%). The inconstant bones of the coronal suture and sagittal suture were found in 2 skulls (2.3%). The additional bones of the occipital-mastoid, parietal-mastoid and squamosal sutures were absent on the examined osteological materials. The fontanelle bones most often located at the place of the occipital fontanellele and they were present in 4 skulls (4.5%). The additional fontanelle bones of the mastoid fontanellele were found in 2 skulls (2.3%). The frontal fontanelle bone was in 1 skull (1.1%). The additional fontanelle bones of the sphenoid fontanellele and interparietal bones were not found in the researched skulls. Conclusion. It is interesting to consider the case of combination in one skull a large inconstant bone of the sagittal suture with complete metopic (frontal) suture and occipital bone of sufficiently large size. The results of the research expanded and updated the existing data on the variant anatomy of inconstant cranial bones. Also, the results obtained maybe required in the further research of individual variability in the structure of the human’s skull.

scholarly journals The presence of Wormian bones increases the fracture resistance of equine cranial bone

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0249451
Author(s):  
Lilibeth A. Zambrano M. ◽  
David Kilroy ◽  
Arun Kumar ◽  
Michael D. Gilchrist ◽  
Aisling Ní Annaidh
Keyword(s):  
Skull Fracture ◽  
Parietal Bone ◽  
Cranial Bone ◽  
Mineral Density ◽  
Wormian Bone ◽  
Wormian Bones ◽  
Bone Properties ◽  
Cross Section Area ◽  
Human Skulls ◽  
Microct Imaging

Wormian (intrasutural) bones are small, irregular bones, that are found in the cranial sutures of the skull. The occurrence of Wormian bones in human skulls has been well documented but few studies have detected the presence of such bones in domestic animals. Although some research has linked the presence of Wormian bones to bone pathology, its anatomical significance in healthy individuals is not known. To the best of our knowledge, no previous study has examined the biomechanical features of Wormian bone. This study uses microCT imaging of the parietal bone region to determine the frequency of occurrence of Wormian bones in horse skulls and, through 3-point bending tests, to calculate the mechanical differences that result from the presence of such bones. In addition, bone properties such as bone mineral density (BMD) and stiffness were measured and analysed to determine the influence of Wormian bone. Our findings on 54 specimens taken from 10 horses (ages ranging from 4 to 29 years) showed that Wormian bone was present in 70% of subjects and that its occurrence was unrelated to age or sex. 3-point bend tests revealed that the stiffness normalised by cross section area (P = 0.038) was lower in samples where Wormian bone was present. An idealised Finite Element simulation confirmed that the presence of Wormian bone reduced the maximum stress and strain, as well as their distribution throughout the sample. We consequently conclude that the presence of Wormian bones, which are confined to the calvaria, increase the compliance of the bone and reduce the likelihood of skull fracture. As all skull samples were collected from a local abattoir, ethical approval was not required for this work.

scholarly journals INCIDENCE OF WORMIAN BONES IN DRY HUMAN SKULLS IN SOUTH INDIAN POPULATION

2017 ◽  
Vol 5 (3.3) ◽  
pp. 4349-4355
Author(s):  
Lekshmy Vijay. V.G ◽  
◽  
Ramakrishna Avadhani ◽  
Meera Jacob ◽  
◽  
...  
Keyword(s):  
Indian Population ◽  
South Indian Population ◽  
Wormian Bones ◽  
South Indian ◽  
Human Skulls

Study on Morphometric Features of Coronal Suture Along with it Absence and Craniosynostosis

2021 ◽  
Vol 9 (4) ◽  
pp. 8151-8155
Author(s):  
Khaleel N ◽  
◽  
Angadi A V ◽  
Muralidhar P S ◽  
Shabiya M ◽  
...  
Keyword(s):  
Birth Defect ◽  
Cranial Sutures ◽  
Coronal Suture ◽  
Cranial Suture ◽  
Medical Sciences ◽  
Hot Climate ◽  
Morphometric Features ◽  
Metopic Suture ◽  
Parietal Bones ◽  
The Brain

Background: Cranial sutures are syndesmosis between the cranial bones. The coronal suture is oblique in direction and extends between the frontal and the parietal bones. Craniosynostosis is a rare birth defect that occurs when the coronal suture in the skull fuses prematurely, but the brain continues to grow and develop. This leads to a misshapen head. There are a number of forms of this defect, such as coronal, sagittal, lambdoid, and metopic. Materials and Methods: Total 500 skulls were used for study, coronal suture length measured by thread method, distance between Nasion to bregma and midsupraorbital rim to coronal suture were measured. For finding skull with absence of coronal, sagittal, lambdoid, and metopic suture, we examined many skulls during routine osteology classes of Medical, Dental and other medical sciences students. Around 500 skull observed and we find only one skull with absence of left coronal suture completely. Results: The length of coronal suture was 24.8+1.4cm length, the distance between nasion to bregma was 126.7 +10.25 mm and Midsupraorbital rim to cranial suture was 102.76+8.64mm We have found only one skull with absence of coronal suture. Some of the skulls shows partly fusion of sagittal, coronal sutures. The skull with complete absence of coronal suture showing the features of other sutures clearly and right side of coronal suture is showing the complete suture. The skull was not damaged and it is in perfect condition which was using by students for their osteology study. Conclusion: We found the skull with absence of left coronal suture, which may resulted due to craniosynostosis. It may be due to hot climate in India also might be resulted for absence of suture. KEY WORDS: Birth defect, Skull, Coronal suture, Craniosynostosis.

scholarly journals Cleidocranial dysplasia: description with emphasis on the radiographic aspects of three cases in a family

2018 ◽  
Vol 50 (6) ◽  
pp. 371-376
Author(s):  
Rodolfo Mendes Queiroz ◽  
José Eduardo Martins Coelho ◽  
Leandro Fuso Ruiz ◽  
Rodrigo Castro Cervato ◽  
Mariana Do Val Cervelatti ◽  
...  
Keyword(s):  
Short Stature ◽  
Autosomal Dominant ◽  
Tooth Eruption ◽  
Anterior Region ◽  
Cleidocranial Dysplasia ◽  
Sagittal Suture ◽  
Supernumerary Teeth ◽  
Genetic Syndrome ◽  
Wormian Bones ◽  
Sporadic Cases

We describe three cases of cleidoclavicular dysplasia in a family, a rare genetic syndrome, presenting autosomal dominant behavior, but with 20-40% of sporadic cases, with an estimated incidence of 1-9/ 1.000.000. The study is based on a family consisting of the parent couple, two daughters and one child. In this group, the mother and the two daughters presented a short stature, with a frontal cranial frontotemporal region, prominent sagittal suture mainly in the anterior region, brachycephaly, mild exophthalmia, broad neck and reduction of the laterolateral diameter of the upper portion of the thorax. In the radiographs of the skull and chest, the presence of Wormian bones in the skull cap, supernumerary teeth, anomalies of tooth eruption and absent or rudimentary clavicles were observed in all three. In view of the findings, the diagnosis of cleidocranial dysplasia was established.

WORMIAN BONES: STUDY ON DRY HUMAN SKULLS IN NORTH KARNATAKA REGION

2016 ◽  
Vol 4 (1) ◽  
pp. 1854-1858
Author(s):  
Uday kumar ◽  
◽  
Ratna Prabha J ◽  
Keyword(s):  
Wormian Bones ◽  
Human Skulls
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