Morphological Variations and Biometrics of Ear: An Aid to Personal IdentificationCorrespondence Address :
Dr. Pradhuman Verma,
Reader, Department of Oral Medicine & Radiology, Surendera Dental College & Research Institute
H.H Gardens; Power House Road, Sriganganagar, Rajasthan-335001, India.
Introduction: The morphological characteristics and dimensions of external ear vary in different human ethnic races which can be utilized in forensics for personal identification of living or deceased.
Aim: To determine uniqueness of morphological and biometric variations of both ears for individualization among North East (NE) and North West (NW) subpopulation of India.
Materials and Methods: The study was conducted on randomly selected 80 students, 40 from each subgroup. Nine ear parameters were recorded twice using digital Vernierís caliper by single investigator and two indices (Ear Index and Lobule Index) were calculated for both the ears. Morphological ear shapes and lobule attachment were also noted. Pearsonís coefficient correlation test was performed on cross-tabulations to evaluate significant relationship between different variables.
Results: Of the total 35% free and 65% attached ear lobes were noted in both population groups. Oval ear shape was most commonly noted followed by triangular, rectangular and round in both populations. On comparing anthropometric measurements of ears in two populations it was found that except the tragus length and lobule index all other values were noted more in NW population. No statistical difference was found in ear and lobular indices of males and females although the left ear index and lobule index were found to be higher than right in both populations except in NW females where right lobule index was recorded more than left.
Conclusion: The results obtained can be used in anthropological and forensic sciences for the inclusion and exclusion of persons for identification on the basis of ear variations.
Ear lobule attachment, Ear measurements, Ethnic races, Ear shapes, Forensics
Pradhuman Verma, Harpreet kaur Sandhu, Kanika Gupta Verma, Sharry Goyal, Madhu Sudan, Amit Ladgotra. MORPHOLOGICAL VARIATIONS AND BIOMETRICS OF EAR: AN AID TO PERSONAL IDENTIFICATION. Journal of Clinical and Diagnostic Research [serial online] 2016 May [cited: 2018 Mar 18 ]; 10:ZC138-ZC142. Available from
Date of Submission: Dec 09, 2015
Date of Peer Review: Jan 25, 2016
Date of Acceptance: Mar 18, 2016
Date of Publishing: May 01, 2016
Financial OR OTHER COMPETING INTERESTS: None.
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