Morphometry of Skulls from North Indian Population: Implications for Ethnicity and Race Identification

Introduction:Anthropometric studies have shown significant variations in the cranium and orbits between races and genders due to various factors such as genetics, race, hormones, nutritional differences, and environmental influences. The present study aims to record cranial and orbital dimensions and indices to classify skulls based on these measurements. MaterialsandMethods: Thirty‑five human adult skulls were obtained from the dissecting laboratory and museum of Hind Institute of Medical Sciences, Safedabad. The orbital height, width, interorbital distance, maximum length, and width of the cranium were measured directly using a digital Vernier caliper. The skulls were then classified based on the orbital and cranial indices calculated. Results: The study found a mean orbital index of 83.42, classifying the skulls as mesoseme, and a cranial index of 73.15, classifying them as dolichocephalic. Conclusion: Basic data and records of morphometry of bones belonging to specific regions can help identify the ethnicity and race of a person. Understanding the correlation of dimensions of the orbital cavity and cranium is crucial in certain conditions, such as interpreting fossils, classification of skulls in forensic medicine, and discovering trends in evolution and racial differences. These findings may also aid in identifying unclaimed bodies in India, which are found in significant numbers yearly

A Comparative Morphometric Study Of Orbit- In North Indian Dry Skull

Background: The bony orbit which lodges the visual apparatus is important not only for anatomists but also forophthalmologists, oral and maxillofacial surgeons and forensic experts. The objectives of the Present study areto provide the normal reference orbital parameters for the north Indian population.Materials and Methods: The study involved 215 dry skulls (83 female & 132 males) from the department ofanatomy from GSVM Kanpur, KGMC Lucknow, SMC Unnao. Orbital height (OH), orbital width (OW) has been takenof both side skulls in male and female. Orbital index (OI) was calculated by OH/OW × 100= OI. All thesemeasurements are taken by digital vernier caliper.Result: Mean orbital height in male skull was 33.8 ± 1.27, while female skull was having 31.2 ± 0.98. Orbitalwidth was 42.64 ± 2.16 in male and 40.85 ± 2.08 was measured in female and the orbital index was 83.45 and77.96 in male then after in female and these all values are found to be statically highly significant. Whilecomparing the right and left sided skull the height was 32.37 ± 1.08, 30.96 ± 0.85 while breadth was 40.31 ± 2.28and 40.28 ± 2.02 and the orbital index was 80.75 ± 5.60 and 80.67 ± 5.31 founded only orbital height have highlysignificant value and width and index having nonsignifacant value.Conclusion: We can conclude by our study that right orbit and male orbits have higher values In comparison toopposite side and sex having more value. Study also tells that male skull Is categorized under mesoseme andfemale in microseme categories of north Indian populations. It is recommended that further population basedstudies be carried out in different geographical locations

Study Of Orbital Morphometry In Dry Skulls Of South Indian Origin

Introduction: The orbit is the cavity of the skull in which the eye and its appendages are situated. Orbitaldimensions of skull vary in different races of mankind. Its dimensions are better understood by the knowledge ofthe orbital index. Normal values of orbital height, orbital width and orbital index are vital measurements inevaluation and diagnosis of craniofacial syndromes, interpretation of fossil records, skull classification inforensic medicine, anthropological investigation of unknown individuals for determining gender, ethnicity, etcand in exploring the trends in evolutionary and ethnic differencesMaterials and methods: It is a cross sectional study conducted on 100 adult dry human skulls available in theDepartment of Anatomy, Sri Devaraj Urs Medical College, Kolar. The orbital dimensions were measured with thehelp of Vernier caliper.Results: The mean orbital height for the right and left sides were 31.6 ± 1.8mm and 31.8 ± 1.8mm while, theirorbital width were 37.4 ± 2.1 and 37.2 ± 2.09 mm respectively. The mean orbital index was 84.49mm on right and85.48mm on left side, and can be classified as Mesoseme category.Conclusion: This study provides useful baseline orbital morphometric data of South Indian population, whichare very important during ophthalmological, plastic surgery, maxillofacial, reconstructive cosmetic surgeries offace and neurosurgeries and also in the forensic research.

A Metric Scrutiny Of The Orbital Margins

Background: The anatomical boundaries of the orbit are defined and the contribution of various bones in makingup the orbital margins is determined .Associated with this, orbital dimensions like length, breadth and theorbital index are determined along with the associated dimorphic and bilateral variations. The findings of theseterritorial specimens are analyzed and compared with similar findings from other vernacular territories. Thebilateral craniofacial structures are studied and they are dimensionally classified and characterized.Comprehensive documentation thus promulgated functions to prove vital in the conquest of dexterity in the fieldof surgery and forensic anthropometry alike. The evaluated parameters also serve as an empirical guide indiscerning tenuous sites that are susceptible to impaction and in defining the safe limits of orbital explorationResults: The study has returned an average value of 81.47 as the orbital index of the scrutinized dry skullspecimens thus placing them under the category of microseme. The average values of orbital length and breadthwere found to be 31.26mm and 38.37mm respectively. The superior margin formed exclusively by the frontalbone measured 32.7mm on average with the supraorbital notch/foramen being displaced 5.92mm from themedial limit of the superior margin. For 25.88mm, which was the average length of medial margin, maxilla stoodthe dominant contributor (13.81mm) with the frontal bone chipping in to contribute to the rest. The inferiormargin paints a contrary picture of maxilla being the secondary contributor (16.13mm) whilst here it is thezygoma which makes a greater contribution (17.29mm).Conclusion: This study hereby establishes Microseme to be the predominant orbital index of the scrutinized skullspecimens in addition to quantifying the contributions of various bones towards making up the margins.Comparative analysis with confluent such studies from other provinces of the Indian subcontinent has confirmedthe latitude variation associated with orbital index. The results thus established will be unerringly essential inthe field of surgery and forensic anthropometry