MBBS student, College of Medicine & JNM Hospital, Nadia, West Bengal
Keywords:
Forensic anthropology, Forensic science, External ear, Sex characteristicsAbstract
Study on physical measurements of human body is anthropometry. Apart from anthropology research, forensic aspects of anthropometry deal with personal identification in criminal investigation. Forensic studies on foot prints, iris, finger prints, cheiloscopy, bite marks have been well established in literature. However, external ear morphometry from adult human is an important topic of forensic research and is not well documented across different geographical barriers. Therefore,present study deals with ear morphometry of 100 adultsfrom east India with an aim of sexual Total ear length (TEL) , ear length above tragus (ELAT) , ear length below tragus (ELBT), concha length (CL) and concha breadth (CB) . Both right and left ears were taken into considerations. Physical measurements were taken and statistically analysed. A discriminant function equation was obtained. Overall, 86.0% of original grouped cases were correctly classified. At the individual group level, 82% of male and 90% of female were correctly classified. Cross-validated results revealed 81% of samples were correctly classified by this model. The Wilk’s Lambda is 0.475, a good fit indicative for the predicted model.External ear morphometrics can be a useful forensic tool in sexual dimorphism. However, it varies among population and geographical barriers. The mathematical model may be used for East Indian population.
References
KumAri A, DEvADAS D, Patel JK, More RS, Dubet P, Kumari KH. Morphometric analysis of external ear to estimate the stature and sexual dimorphism in North Indians: A cross-sectional study. J ClinDiagn Res. 2022 May 1;16(5):10-4.
Fakorede ST, Adekoya KO, Fasakin TP, Odufisan JO, Oboh B. Ear morphology and morphometry as
potential forensic tools for identification of the Hausa, Igbo and Yoruba populations of Nigeria. Bulletin of the National Research Centre. 2021 Dec;45(1):1-9.
Krishan K, Kanchan T, Thakur S. A study of morphological variations of the human ear for its applications in personal identification. Egyptian Journal of Forensic Sciences. 2019 Dec;9(1):1-1.
Nigam R, Kulshreshtha S. Anthropometric Study Of External Ear In North Indian Population. International Journal of Anatomy and Research. 2019;7(3.2):6800- 03.
Rani D, Krishan K, Sahani R, Baryah N, Kanchan T. Variability in human external ear anthropometry Anthropological and forensic applications. La ClinicaTerapeutica. 2021 Nov 25;172(6).
Natekar PE, De Souza FM. Demarking and identifying points-reliable criteria for determination of sex from external ear. Indian Journal of Otology. 2012 Jan 1;18(1):24-7.
Faakuu E, Abaidoo CS, Appiah AK, Tetteh J. Morphological study of the external ear among the Dagaabas in the Upper West region of Ghana. Scientific African. 2020 Jul 1;8:e00408.
Erekosima BU, Oparaodu UA, Ikenga VO. OnuohaUchenna (2022). Auricular Morphometry of Okrika Tribe in Rivers State, Nigeria. Saudi J Med Pharm Sci. 2022;8(5):239-43.
Edibamode EI, Mordi K, David LK, Eghoi AM. Anthropometry of the external ear among adult Ijaws in Bayelsa state of Nigeria. International Journal. 2019;5(1):75-83.
Alabi AS, Adeola A, Kareem SB, Lewu SF, Olawepo A, Arogundade TT, Yawson EO. Anthropometric analysis of auricular indices for sex and stature determination among Okun and Igala ethnic groups of Kogi State, Nigeria. Journal of Environmental Toxicology and Public Health. 2019;4:6-14.
Rani D, Krishan K, Sahani R, Baryah N, Kanchan T. Evaluation of morphological characteristics of the human ear in young adults. Journal of Craniofacial Surgery. 2020 Sep 1;31(6):1692-8.
More SS, Mane V, Yadav A. Determination of External Ear Indices by Digital Photometry among Adult Population. New Frontiers in Medicine and Medical Research Vol. 1. 2021 Aug 2:77-83.
