scholarly journals Metric analysis of basal sphenoid angle in adult human skulls

2014 ◽  
Vol 12 (3) ◽  
pp. 314-317 ◽  
Author(s):  
Dante Simionato Netto ◽  
Sergio Ricardo Rios Nascimento ◽  
Cristiane Regina Ruiz
Keyword(s):  
Anterior Margin ◽  
Sella Turcica ◽  
Foramen Magnum ◽  
Statistical Correlation ◽  
Reference Points ◽  
Metric Analysis ◽  
Cranial Index ◽  
Adult Humans ◽  
Human Skulls ◽  
Average Angle

Objective To analyze the variations in the angle basal sphenoid skulls of adult humans and their relationship to sex, age, ethnicity and cranial index. Methods The angles were measured in 160 skulls belonging to the Museum of the Universidade Federal de São Paulo Department of Morphology. We use two flexible rules and a goniometer, having as reference points for the first rule the posterior end of the ethmoidal crest and dorsum of the sella turcica, and for the second rule the anterior margin of the foramen magnum and clivus, measuring the angle at the intersection of two. Results The average angle was 115.41°, with no statistical correlation between the value of the angle and sex or age. A statistical correlation was noted between the value of the angle and ethnicity, and between the angle and the horizontal cranial index. Conclusions The distribution of the angle basal sphenoid was the same in sex, and there was correlation between the angle and ethnicity, being the proportion of non-white individuals with an angle >125° significantly higher than that of whites with an angle >125°. There was correlation between the angle and the cranial index, because skulls with higher cranial index tend to have higher basiesfenoidal angle too.

Correlation Between Cranial Index and Foramen Magnum Index in Human Dried Skulls

2012 ◽  
Vol 3 (1) ◽  
pp. 3-6
Author(s):  
Dr Deepak S Howale ◽  
◽  
Dr Anil Bathija Dr Anil Bathija ◽  
Sudarshan Gupta ◽  
Dr D P Pandit Dr D P Pandit
Keyword(s):  
Foramen Magnum ◽  
Cranial Index

scholarly journals Morphometric analysis of the sella turcica in Northeastern Brazil

2021 ◽  
Author(s):  
Pablo Mariz de Oliveira ◽  
Amanda do Nascimento Oliveira e Carneiro ◽  
Fábio Antônio Serra de Lima Júnior ◽  
Daniel Dantas da Silva ◽  
Leticia Leite Cavalcante ◽  
...  
Keyword(s):  
Pituitary Gland ◽  
Linear Correlation ◽  
Sella Turcica ◽  
Northeastern Brazil ◽  
Surgical Approaches ◽  
Linear Measurements ◽  
Positive Linear Correlation ◽  
Skull Measurements ◽  
And Gender ◽  
Human Skulls

Introduction: The sella turcica is a structure of the median region of the sphenoid bone. Variations in its morphology are relevant as it is a region subjected to several surgical procedures, mainly related to the pituitary gland. Objective: To analyze the morphology of the sella turcica and its sexual dimorphism in Northeastern Brazil. Methods: Fifteen human skulls from the Federal University of Paraíba (UFPB) were used. The qualitative analysis was performed by classifying the shape of the sella turcica into three types: U, J and flattened. Morphometric data was collected and statistically analyzed to evaluate the relationship between sella morphometry and gender, and between sella and skull measurements. Values of p< 0.05) in the sella turcica length (STL) and skull length (SL), with male skulls being larger in both cases. The other linear measurements didn’t show differences between the sexes (p>0.05). There was a positive linear correlation between STL and SL, and a negative linear correlation between sella turcica width (STW) and sella turcica height (STH) and between STH and bitemporal width (BTW). Conclusion: The results point to important differences in the morphometric parameters evaluated with original findings for this population. Knowledge of the morphology of the sella is essential to plan safer surgical approaches in the pituitary gland or related anatomical structures.

scholarly journals Morphologic and Osteometric Analysis of the Skull of Markhoz Goat (Iranian Angora)

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Nader Goodarzi ◽  
Toraj Shah Hoseini
Keyword(s):  
Foramen Magnum ◽  
Parietal Bone ◽  
Frontal Bone ◽  
Occipital Bone ◽  
Cheek Tooth ◽  
Frontal Surface ◽  
Infraorbital Foramen ◽  
Skull Length ◽  
Cranial Index

This study provides some comprehensive osteometric and morphologic descriptions of the skull region of the Markhoz goat. Totally, 17 osteometric parameters of eight skulls of Markhoz goat were measured and expressed as mean ± SD. A skull length of18.67±0.66, a cranial length of11.1±0.38, a facial length of10.23±0.76, a skull index of47.77±1.96, a cranial index of54.04±2.29, a facial index of100.77±6.85and a foramen magnum index of89.32±14.1were recorded. Morphologically frontal bone did not constitute the caudal extent of frontal surface; rather it was formed by the parietal bone. There were two supraorbital foramina in both sides. The prominent facial tuberosity lies dorsally to the 3rd cheek tooth. The infraorbital foramen was single on either side which was located directly dorsally to the junction of the first and second upper premolar. The orbits were round and complete and located on a frontolateral oblique plane. The basilar part of the occipital bone was surrounded by two pairs of muscular tubercles with similar size. The temporal line was continuous of the temporal crest and ran over the parietal bone. In conclusion, the morphologic and osteometric data of Markhoz goat are comparable to other ruminants.

scholarly journals Morphometric Analysis of Foramen Magnum for Sex Determination in South Indian Population

2012 ◽  
Vol 02 (01) ◽  
pp. 20-22
Author(s):  
Radhakrishna S. K. ◽  
Shivarama C. H. ◽  
Ramakrishna A. ◽  
Bhagya B.
Keyword(s):  
Indian Population ◽  
Good Condition ◽  
Cranial Base ◽  
Foramen Magnum ◽  
Transverse Diameter ◽  
South Indian Population ◽  
Medical College ◽  
Metric Analysis ◽  
South Indian ◽  
Oval Shape

AbstractIn this study the foramen magnum was analyzed for sex differences using standard osteometric techniques.We analyzed 100 (55 males and 45 females) skulls from the department of Anatomy, Yenepoya Medical College which were in good condition with a record of sex. The cranial base was visually assessed for foramen magnum shape. Morphometry (anteroposterior diameter (APD)& Transverse diameter (TD)) was determined and their differences by gender (p <0.05) were ascertained.Oval shape was the most common followed by round, tetragonal and pentagonal in both sex. The results demonstrated that sexual dimorphism is present in the foramen magnum. APD and TD were higher in male skulls than females (34.04 vs 31.72 and 28.63 vs 26.59).In incomplete skeletons, metric analysis of the foramen magnum may provide a statistically useful indication as to sex of the unknown skull.

scholarly journals Anatomical and clinical correlates of the precondylar tubercle

2014 ◽  
Vol 31 (03) ◽  
pp. 182-186 ◽  
Author(s):  
A. Jaffar
Keyword(s):  
Anterior Margin ◽  
Surgical Intervention ◽  
Foramen Magnum ◽  
Occipital Condyle ◽  
Radiographic Images ◽  
Radiographic Appearance ◽  
Clinical Correlates ◽  
Clinical Community ◽  
Spiral Computerized Tomography ◽  
Occipital Condyles

Abstract Introduction: The possible presence of the precondylar tubercle should be considered in order to avoid misinterpretation in radiographic images and confusion during surgical intervention. This study is aimed to describe and report the frequency of the precondylar tubercle and similar variations at the anterior margin of foramen magnum in order to alert the clinical community of their presence and of the possible associated variations. Materials and Methods: Fifty dry skulls were examined for variations at the anterior margin of foramen magnum. One skull with bilaterally prominent precondylar tubercles was studied using a spiral computerized tomography in order to demonstrate the radiographic appearance of the tubercle. Results: Precondylar tubercles were observed in 10% of the skulls. Other simulating observations included the presence of a midline spur, bilateral depression anteromedial to the occipital condyles, third occipital condyle, and a partly divided occipital condyle. In 89% of the cases these variations were associated with septation of the hypoglossal canal. Conclusion: The presence of a mere precondylar tubercle is not expected to produce neurological manifestations. However, its possible association with other variations should be considered. The size and location of the precondylar tubercle might evade plain radiographic films, but it can be readily revealed in axial computerized tomograms.

scholarly journals An Evaluation of Auditory Exostoses in 621 Prehistoric Human Skulls from Coastal Brazil

2007 ◽  
Vol 86 (8) ◽  
pp. 468-472 ◽  
Author(s):  
Maria Mercedes M. Okumura ◽  
Célia Helena C. Boyadjian ◽  
Sabine Eggers
Keyword(s):  
External Auditory Canal ◽  
Cold Water ◽  
Brazilian Coast ◽  
Multidisciplinary Research ◽  
Human Skull ◽  
Air Temperatures ◽  
Adult Humans ◽  
Human Skulls ◽  
Bone Anomalies ◽  
Water Sports

Auditory exostoses are bone anomalies located on the floor of the external auditory canal. They frequently develop in individuals who participate in water sports and other aquatic activities. Their etiology is probably multifactorial; development seems to be triggered by regular exposure to cold water, as well as to low air temperatures and/or cold winds. The presence of auditory exostoses has been recorded in human skull fossils that date back approximately 250,000 years. We conducted a study of auditory exostoses in 621 skulls of adult humans who had been part of a marine-dependent population that lived on the Brazilian coast between 5,400 and 800 years ago. The overall frequency of exostoses was 22%, but there was a great variance among different subgroups (0 to 56%). In this article, we propose some possible explanations for this variance. We also hope that our study will stimulate multidisciplinary research aimed at deciphering the intricate bony messages contained in cryptic archaeologic remains.

scholarly journals MORPHOMETRIC ANALYSIS OF FORAMEN MAGNUM IN NORTH INDIAN POPULATION

2018 ◽  
Vol 26 (2) ◽  
Author(s):  
Poonam Srivastava ◽  
Medha Das ◽  
Shirin Jahan
Keyword(s):  
Morphometric Analysis ◽  
Indian Population ◽  
Uttar Pradesh ◽  
Foramen Magnum ◽  
Transverse Diameter ◽  
Brain Herniation ◽  
Medical College ◽  
The Mean ◽  
Large Opening ◽  
Human Skulls

Introduction: Foramen magnum is a large opening located in the occipital bone of the skull. The morphometric analysis of foramen magnum is clinically and surgically important because vital structures passing through it may suffer compression such as in cases of achondroplasia, brain herniation and meningiomas. Objectives: To study morphometric analysis of foramen magnum in dry human skulls and to measure its anteroposterior diameter, transverse diameter and foramen magnum index. Material & Methods: 100 dried human skulls of unknown age and sex were obtained from Department of Anatomy, Rama Medical College and GSVM Medical College, Kanpur, Uttar Pradesh, India. Deformed samples were excluded. Different parameters were measured with the help of Vernier caliper. Results: The mean antero-posterior diameter of foramen magnum was 33.79mm. The maximum antero-posterior diameter of foramen magnum was 40mm and minimum antero-posterior diameter was 28.2mm.The mean transverse diameter of foramen magnum was 28.30mm.The maximum transverse diameter of foramen magnum was 36mm and minimum transverse diameter was 21.5mm.The mean index of foramen magnum was 84.14mm. Conclusion: The morphometric analysis of foramen magnum and its variation is important not only for anatomists but also important to the anesthetists, neurosurgeons, orthopedicians and radiologists ; while planning and performing cranio-vertebral junction procedures.

scholarly journals Occipital Emissary Foramina in South Indian Modern Human Skulls

ISRN Anatomy ◽  
2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Suruchi Singhal ◽  
Roopa Ravindranath
Keyword(s):  
Indian Population ◽  
Modern Human ◽  
Foramen Magnum ◽  
Medical College ◽  
South Indian ◽  
Cranial Venous Sinuses ◽  
New Finding ◽  
Human Skulls ◽  
The Right ◽  
Intracranial Infections

An occipital emissary foramen has been traditionally described as a foramen present in the squamous part of the occipital bone at the occipital protuberance transmitting a vein that connects the confluence of sinuses with the occipital vein. The present study was done on 221 South Indian adult modern human skulls of unknown sex in the Department of Anatomy, St John’s Medical College, Bangalore, India. The foramen was observed in 21/221 (9.50%) skulls, 6/21 (28.57%) to the right of, 10/21 (47.61%) to the left of, and 2/21 (9.52%) on the External Occipital Crest. It was seen more often near the posterior margin of foramen magnum rather than at the External Occipital Protuberance as has been traditionally described. A new finding is that bilateral foramina were observed in 3 skulls (14.28%). The incidence was higher than seen in other Indian population. Since it is present near the foramen magnum in most cases, knowledge of the number and position of the foramen is important for suboccipital craniotomies. The extensive connections of the veins with cranial venous sinuses may lead to intracranial infections and vice versa.

scholarly journals MORPHOLOGY AND MORPHOMETRIC ANALYSIS OF FORAMEN MAGNUM IN ADULT HUMAN SKULLS

2020 ◽  
Vol 8 (4.1) ◽  
pp. 7771-7776
Author(s):  
Giridhar Dasegowda ◽  
◽  
Padmalatha K ◽  
Priyanka B P ◽  
Sanjiti Mirmire ◽  
...  
Keyword(s):  
Morphometric Analysis ◽  
Transitional Zone ◽  
Foramen Magnum ◽  
Transverse Diameter ◽  
Vertebral Arteries ◽  
Important Landmark ◽  
The Mean ◽  
Posterior Spinal Arteries ◽  
Human Skulls ◽  
Base Of The Skull

Background: The Foramen magnum is an important landmark present at the base of the skull, it serves as a transitional zone between spine and skull. It is closely related to vital structures such as medulla oblongata, meninges, anterior and posterior spinal arteries, vertebral arteries and spinal accessory nerve, passing through it hence thorough knowledge of foramen magnum is required. These structures passing may undergo compression in case of foramen magnum herniation, meningiomas and foramen magnum achondroplasia. Aims: The present study aims in performing the morphometric analysis foramen magnum and to classify it based on its shape. Materials and methodology A total number of 64 adult dry human skulls were evaluated from the Department of Anatomy, ESIC MC & PGIMSR, Rajajinagar, Bengaluru, Karnataka. Results: The mean antero-posterior diameter was found to be 34.10 ± 2.63 mm, mean transverse diameter was 28.07 ± 1.87 mm, with mean area of 752.07 ± 111.97 mm2 and foramen magnum index was 1.21 ± 0.12. The foramen magnum shapes were classified as oval (30%), circle (12%), hexagonal (3%), pentagonal (5%), egg (17%), leaf (6%), irregular (27%). Conclusion: The morphometry along with other parameters can be used for sex determination in partially damaged skull bones of unknown individuals. The obtained data is useful not only for anatomists but also the neurosurgeons, otorhinolaryngologist and radiologists. Keywords: Foramen Magnum, Morphometry, Meningioma, Achondroplasia, Antero-Posterior Diameter, Transverse Diameter, Foramen Magnum Area, Foramen Magnum Index.

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