Objective: The aim of the present study is to discriminate functions for sex determination in a subjected sample of the Egyptian population using the morphology of metacarpals and phalanges for gender comparison. Furthermore, the measurements discussed in this study will aid in predicting the differentiation independently and guaranteeing sex determination in the subjected population individually. Methods: Forty measurements were taken from the right metacarpals and phalangeal bones of 100 subjects, whose ages ranged from 19 to 60. Moreover, the measurements of nine metacarpals and four phalangeal bones were used for sex discrimination in each sample population. Results: Males had significantly greater mean values (P < 0.05) for the lengths of the metacarpals and the proximal phalangeal bones of all right-hand fingers than females. The cut-off value and the accuracy percentage for precise sex classification of males and females using individual and grouped bones showed that a value higher than the marking point classified an individual as male and that a lower value suggested female. Besides, the multiple stepwise discriminant functional analysis of the most predictable internal variables of the metacarpals revealed a cross-validated sex classification accuracy of 100%. In contrast, the most predictable internal variables of the phalanges showed a cross-validated sex classification accuracy of 93%. Conclusion: The results revealed a new forensic suggestion for the determination of sex based on the measurements of the metacarpals and the phalanges. Moreover, various discriminant equations were applied for the declaration of this conceivable recommendation.
Kranioti, E.F., Nathena, D. and Michalodimitrakis, M. (2011) Sex Estimation of the Cretan Humerus: A Digital Radiometric Study. International Journal of Legal Medicine, 125, 659-667. https://doi.org/10.1007/s00414-010-0470-4
Bedalov, A., Basic, Z., Marelja, I., Dolic, K., Bukarica, K., Missoni, S., Slaus, M., Primorac, D., Andjelinovic, S. and Kruzic, I. (2019) Sex Estimation of the Sternum by Automatic Image Processing of Multi-Slice Computed Tomography Images in a Croatian Population Sample: A Retrospective Study. Croatian Medical Journal, 60, 237-245. https://doi.org/10.3325/cmj.2019.60.237
Desilva, R., Flavel, A. and Franklin, D. (2014) Estimation of Sex from the Metric Assessment of Digital Hand Radiographs in a Western Australian Population. Forensic Science International, 244, 314.e1-314.e7. https://doi.org/10.1016/j.forsciint.2014.08.019
Iscan, M.Y. and Steyn, M. (2013) The Human Skeleton in Forensic Medicine. Charles C Thomas Publisher, Springfield.
Primorac, D. and Schanfield, M. (2014) Forensic DNA Applications: An Interdisciplinary Perspective. CRC Press, Boca Raton. https://doi.org/10.1201/b16512
Aal, K.M.A. and Yossef, H.A. (2014) Determination of Sex from Sternal Dimensions in Upper Egypt Population by Using Multislice Computed Axial Tomography. Ain Shams Journal of Forensic Medicine and Clinical Toxicology, 23, 103-114. https://doi.org/10.21608/ajfm.2014.18679
Al Shehri, F. and Soliman, K.E. (2015) Determination of Sex from Radiographic Measurements of the Humerus by Discriminant Function Analysis in Saudi Population, Qassim Region, KSA. Forensic Science International, 253, 138.e1-138.e6. https://doi.org/10.1016/j.forsciint.2015.05.022
Curate, F., Albuquerque, A., Ferreira, I. and Cunha, E. (2017) Sex Estimation with the Total Area of the Proximal Femur: A Densitometric Approach. Forensic Science International, 275, 110-116. https://doi.org/10.1016/j.forsciint.2017.02.035
Akhlaghi, M., Bakhttavar, K., Bakhshandeh, H., Mokhtari, T., Farahani, V.M., Parsa, A.V., Mehdizadeh, F. and Sadeghian, M. (2017) Sex Determination Based on Radiographic Examination of Metatarsal Bones in Iranian Population. International Journal of Medical Toxicology & Forensic Medicine, 7, 203-208.
Yune, S., Lee, H., Kim, M., Tajmir, S.H., Gee, M.S. and Do, S. (2019) Beyond Human Perception: Sexual Dimorphism in Hand and Wrist Radiographs Is Discernible by a Deep Learning Model. Journal of Digital Imaging, 32, 665-671. https://doi.org/10.1007/s10278-018-0148-x
Burrows, A.M., Zanella, V.P. and Brown, T.M. (2003) Testing the Validity of Metacarpal Use in Sex Assessment of Human Skeletal Remains. Journal of Forensic Science, 48, 17-20. https://doi.org/10.1520/JFS2002038
Mohamed, M.A.M., Ahmed, H.M., Hassan, O.A., Abdelwahab, M.A. and Younis R.H.A. (2020) Reliability of Internal Metacarpal Measurements for Sex Determination Using Multi-Detector Computed Tomographic Imaging in a Sample of Egyptian Population. Australian Journal of Forensic Sciences, 53, 661-680. https://doi.org/10.1080/00450618.2019.1711181
Alicioglu, B., Yilmaz, A., Karakas, H., Cigali, B., Cikmaz, S. and Ulucam, E. (2009) Sex Determination by the Interarticular Distance of Metacarpals and Phalanges: A Digital Radiologic Study in Contemporary Turkish People. Anatomy, 3, 14-20. https://doi.org/10.2399/ana.08.027
Castaneda, A. and Cadena, C.A.A. (2017) Análisis de funciones discriminantes para la asignación sexual en cráneos de la población mexicana contemporánea (ColecciónUNAM). Escuela Nacional de Antropología e Historia, México.
Mastrangelo, P., De Luca, S., Alemán, I. and Botella, M.C. (2011) Sex Assessment from the Carpals Bones: Discriminant Function Analysis in a 20th Century Spanish Sample. Forensic Science International, 206, 216.e1-216.e10. https://doi.org/10.1016/j.forsciint.2011.01.007
Alabi, A.S., Aigbogun, E.O., Lemuel, A.M. and Buhar, M.B. (2020) Sex Estimation from Radiogrametric Linear Dimensions of the Metacarpals and Phalanges in a Nigerian Population. Forensic Science International: Reports, 2, Article ID: 100097. https://doi.org/10.1016/j.fsir.2020.100097
Case, D.T., Rawlins, C.M. and Mick, C.B. (2015) Brief Communication: Measurement Standards for Human Metacarpals. American Journal of Physical Anthropology, 157, 322-329. https://doi.org/10.1002/ajpa.22700
El Morsi, D.A. and Al Hawary, A.A. (2013) Sex Determination by the Length of Metacarpals and Phalanges: X-Ray Study on Egyptian Population. Journal of Forensic and Legal Medicine, 20, 6-13. https://doi.org/10.1016/j.jflm.2012.04.020
Manolis, S.K., Eliopoulos, C., Koilias, C.G. and Fox, S.C. (2009) Sex Determination Using Metacarpal Biometric Data from Athens Collection. Forensic Science International, 193, 130.e1-130.e6. https://doi.org/10.1016/j.forsciint.2009.09.015
Barrio, P.A., Trancho, G.J. and Sanchez, J.A. (2006) Metacarpal Sexual Determination in a Spanish Population. Journal of Forensic Sciences, 51, 990-995. https://doi.org/10.1111/j.1556-4029.2006
Ameri, M., Ghorbani, S., Ameri, E. and Fares, F. (2018) Sex Determination by the Length Ratio of Metacarpals and Phalanges: X-Ray Study on Iranian Population. Tehran University Medical Journal, 76, 558-561.
Kanchan, T., Krishan, K., Sharma, A. and Menezes, R.G. (2010) A Study of Correlation of Hand & Foot Dimensions for Personal Identification in Mass Disaster. Forensic Science International, 199, 112.e1-112.e6. https://doi.org/10.1016/j.forsciint.2010.03.002
Krishan, K. and Kanchan. (2016) Forensic and Anthropological Application of Body Asymmetry: A Comment on Gutnik et al. (2015). Perceptual and Motor Skills, 122, 578-582. https://doi.org/10.1177/0031512516640667
Torres, G., Garmendia, A.M., Mejorada, G.S. and Valdés, J.A. (2020) Estimation of Gender from Metacarpals and Metatarsals in a Mexican Population. Spanish Journal of Legal Medicine, 46, 12-19. https://doi.org/10.1016/j.remle.2018.09.004
Morgan, D.B., Spiers, F.W., Pulvertaft, C.N. and Fourman, P. (1967) The Amount of Bone in the Metacarpal and the Phalanx According to Age and Sex. Clinical Radiology, 18, 101-108. https://doi.org/10.1016/S0009-9260(67)80137-5
McFadden, D. and Bracht, M.S. (2009) Sex and Race Differences in the Relative Length of Metacarpals and Metatarsals in Human Skeletons. Early Human Development, 85, 117-124. https://doi.org/10.1016/j.earlhumdev.2008.07.001
Garrido, C.E. and Thompson, T.J.U. (2011) Metric Dimensions of the Proximal Phalanges of the Human Hand and Their Relationship to Side, Position, and Asymmetry. HOMO, 62, 126-143. https://doi.org/10.1016/j.jchb.2010.07.005
Eshak, G.A., Ahmed, H.M. and Gawad, E.A.M.A. (2011) Gender Determination from Hand Bones Length and Volume Using Multidetector Computed Tomography: A Study in Egyptian People. Journal of Forensic and Legal Medicine, 18, 246-252. https://doi.org/10.1016/j.jflm.2011.04.005
Karakostis, F.A., Zorba, E. and Moraitis, K. (2015) Sex Determination Using Proximal Hand Phalanges. Papers on Anthropology, 24, 37-56. https://doi.org/10.12697/poa.2015.24.2.04
Habib, S.R. and Kamal, N.N. (2010) Stature Estimation from Hand and Phalanges Length of Egyptians. Journal of Forensic and Legal Medicine, 17, 156-160. https://doi.org/10.1016/j.jflm.2009.12.004