Phruksachat Singsuwan; Kanchanok Tevavichulada; Natthanit Muramun; Laksika Suksawat; Wimolnat Nontrasiri; Sukon Prasitwattanaseree & Pasuk Mahakkanukrauh

The determination of sex is a crucial element of forensic anthropology, particularly when attempting to distinguish unidentified skeletal remains. The objective of this research was to assess the cuboid bone's capability for sex determination in a contemporary Thai population. A total of 600 Thai cuboid bones (300 male, 300 female) were used in this study, with the right and left cuboid bones used to obtain ten measurements. To establish sex estimation equations for each measurement, multiple logistic regression analysis was applied. The cuboid height (CubHt) and cuboid width (CubBr) measures showed the greatest classification accuracy, surpassing 80 %. To confirm the models, this study used a test sample of 60 cuboids (30 male, 30 female), with overall precision found to be between 58.3 % and 81.6 %. Especially, when more sexually dimorphic bones are unobtainable, the findings of this study indicate that the cuboid bone could be used as an additional tool for the determination of sex.

KEY WORDS: Sex estimation; Cuboid bone; Tarsals; Forensic anthropology; Thailand.

SINGSUWAN, P.; TEVAVICHULADA, K.; MURAMUN, N.; SUKSAWAT, L.; NONTRASIRI, W.; PRASITWATTANASEREE, S. & MAHAKKANUKRAUH, P. Sex estimation based on the cuboid bone in a modern Thai population. Int. J. Morphol., 43(5):1508- 1513, 2025.