Possible application of CT morphometry of the calcaneus and talus in forensic anthropological identification

• Published in: International journal of legal medicine Vol. 130; no. 2; pp. 575 - 585
• Main Authors: Inamori-Kawamoto, Osamu, Ishikawa, Takaki, Michiue, Tomomi, Mustafa, Asmaa Mohammed Hishmat, Sogawa, Nozomi, Kanou, Tetsuya, Oritani, Shigeki, Maeda, Hitoshi
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2016; Springer Nature B.V
• Subjects: Adolescent; Adult; Age; Aged; Aged, 80 and over; Anthropology; Asian Continental Ancestry Group; Automation; Autopsies; Body Height; Bones; Calcaneus - anatomy & histology; Calcaneus - diagnostic imaging; Child development; Female; Forensic Anthropology; Forensic Medicine; Gender differences; Human remains; Humans; Identification; Imaging, Three-Dimensional; Japan; Legal medicine; Male; Medical Law; Medicine; Medicine & Public Health; Middle Aged; Original Article; Sex Determination by Skeleton; Sexes; Talus - anatomy & histology; Talus - diagnostic imaging; Tomography; Tomography, X-Ray Computed; Young Adult; Japan; Talus; Forensic anthropology; Stature estimation; Sex estimation; Calcaneus
• ISSN: 0937-9827; 1437-1596
• DOI: 10.1007/s00414-015-1258-3

Computed tomography (CT) data provide information for volumetric and radiographic density analysis. The present study investigated the application of virtual CT volumetry of the tarsal bones to estimation of the sex, stature, and body weight using postmortem CT (PMCT) data of forensic autopsy cases. Three-dimensional (3D) images of the bilateral foot bones of intact Japanese subjects after adolescence (age ≥15 years, n  = 179, 100 males and 79 females) were reconstructed on an automated CT image analyzer system. Measured parameters were mass volume, mean CT value (HU), and total CT value of the talus and calcaneus. Mean CT values of these bones showed age-dependent decreases in elderly subjects over 60 years of age for both sexes, with significant sex-related differences especially in the elderly. The mass volumes and total CT values of the talus and calcaneus showed significant sex-related differences, and also moderate correlations with body height and weight for bilateral bones in all cases ( r  = 0.58–0.78, p  < 0.0001); however, the correlations of these parameters of the female talus with body weight were insufficient ( r  = 0.41–0.61, p  < 0.0001). These observations indicate the applicability of virtual CT morphometry of the talus and calcaneus using an automated analyzer to estimate the sex and stature in forensic identification; however, greater variations should be considered in body weight estimations of females.