RESUMO
The dried clavicles have been well documented to determine individual sex and age in many races. Such morphometric investigations in Isan (Northeastern) Thais have never been reported. Therefore, this study aimed to estimate the sex from dried clavicles of Isan-Thais using morphometric analysis. The identified 454 dried clavicles (254 males and 200 females), averaged age (60.69±14.36 years) were measured and analyzed for identification point (IP) and the demarking point (DP) values. The results showed that the identified-bone percentages by IP of the maximum clavicular lengths in males and females were 90.55 % (>139.9 mm) and 89 % (<140.6 mm). In addition, such percentages of the mid shaft circumference measured in male clavicles was 83.46 % (>37.7 mm) and in females was 75 % (<37.0 mm). However, percentages of the DP in all parameters were less than 50%. The highest DP values of maximum length of male clavicles was 43.31% (>152.5). In conclusion, the maximum length and mid shaft circumference investigated from this study can be used as basic data of Isan Thais for applying as a guide in forensic sciences for sex determination from dried clavicle remains.
Las clavículas secas han sido bien documentadas en muchas razas para determinar el sexo y la edad individuales. Tales investigaciones morfométricas en Isan (Noreste de Tailandia) nunca han sido reportadas. Por lo tanto, este estudio tuvo como objetivo estimar el sexo de clavículas secas de Isais-Thais utilizando un análisis morfométrico. Se midieron 454 clavículas secas (254 varones y 200 hembras), con una edad media de 60,69 ± 14,36 años, y fueron analizadas para los puntos de identificación (IP) y de demarcación (DP). Los resultados mostraron que los porcentajes de hueso identificados por IP en relación a la longitud clavicular máxima en hombres y mujeres fueron 90,55 % (> 139,9 mm) y 89 % (<140,6 mm), respectivamente. Además, tales porcentajes de circunferencia media del eje, medido en las clavículas de los hombres, fue 83,46 % (> 37,7 mm) y en las de mujeres fue 75 % (<37,0 mm). Sin embargo, los porcentajes de la DP en todos los parámetros fueron menores al 50 %. Los valores más altos de DP de longitud máxima de las clavículas de los hombres fue 43,31 % (> 152,5). En conclusión, la longitud máxima y la circunferencia media del eje investigados a partir de este estudio se pueden utilizar como datos básicos en Isan - Thais para aplicar como guía en las ciencias forenses para la determinación del sexo a partir de restos de clavícula secas.
Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Clavícula/anatomia & histologia , Determinação do Sexo pelo Esqueleto/métodos , Antropologia Forense , TailândiaRESUMO
The rhomboid fossa of clavicle is used to determine the age and sex in anthropology and forensic sciences. The variant types of rhomboid fossa on inferior surface have been reported in many races except in Thais. This study therefore was aimed at classifying the types of the rhomboid fossa in Northeastern Thais. The identified 476 Northeastern Thais dried clavicles (270 males and 206 females) were observed and recorded for the types of rhomboid fossa. The results showed that Thai-rhomboid fossa could be classified into 4 types: Type 1: smooth; Type 2: flat; Type 3: elevated; and Type 4: depressed, respectively. The incidences of rhomboid fossa were as follows: Type 1: 0.21%; Type 2: 19.75%; Type 3: 76.26%; and Type 4: 3.78%, respectively. Additionally, it was found that the percentage of Type 4 (11.84%) was much greater than that of female (1.94%) compared to other types. This incidence of rhomboid fossa types especially Type 4 may be a basic knowledge to be used in sex identification. The high incidence of rhomboid fossa in both sexes of Northeastern Thai clavicles was Type 3 (elevated type).
