Monum T, Prasitwattanseree S, Das S, Siriphimolwat P, Mahakkanukrauh P
Department of Forensic Medicine, Faculty of Medicine, Chiang Mai University, 50200, Thailand Master of science program in forensic Science, Graduate Unit, Chiang Mai University, 50200, Thailand.
Excellence in Osteology Research and Training Center (ORTC), Chiang Mai University, Chiang Mai, 50200, Thailand - Department of Statistics, Faculty of Science, Chiang Mai University, 50200, Thailand.
Clin Ter. 2017 May-Jun;168(3):e203-e207. doi: 10.7417/T.2017.2007.
Sex estimation is an important step of postmortem investigation and the femur is a useful bone for sex estimation by using metric analysis method. Even though there have been a reported sex estimation method by using femur in Thais, the temporal change related to time and anthropological data need to be renewed. Thus the aim of this study is to re-evaluate sex estimation by femur in Thais. 97 adult male and 103 female femora were random chosen from Forensic osteology research center and 6 measurements were applied tend to. To compare with previous Thai data, mid shaft diameter to increase but femoral head and epicondylar breadth to stabilize and when tested previous discriminant function by vertical head diameter and epicondalar breadth, the accuracy of prediction was lower than previous report. From the new data, epicondalar breadth is the best variable for distinguishing male and female at 88.7 percent of accuracy, following by transverse and vertical head diameter at 86.7 percent and femoral neck diameter at 81.7 percent of accuracy. Multivariate discriminant analysis indicated transverse head diameter and epicondylar breadth performed highest rate of accuracy at 89.7 percent. The percent of accuracy of femur was close to previous reported sex estimation by talus and calcaneus in Thai population. Thus, for especially in case of lower limb remain, which absence of pelvis.
性别估计是尸体检验的重要步骤，股骨是通过测量分析方法进行性别估计的有用骨骼。尽管已有关于泰国人股骨性别估计方法的报道，但与时间相关的时间变化和人类学数据仍需更新。因此，本研究的目的是重新评估泰国人股骨的性别估计。从法医骨科学研究中心随机选取97例成年男性和103例成年女性的股骨，并进行6项测量。与之前的泰国数据相比，股骨干中部直径增加，但股骨头和髁上宽度趋于稳定，当用垂直头直径和髁上宽度测试之前的判别函数时，预测准确率低于之前的报告。根据新数据，髁上宽度是区分男性和女性的最佳变量，准确率为88.7%，其次是横头直径和垂直头直径，准确率为86.7%，股骨颈直径准确率为81.7%。多变量判别分析表明，横头直径和髁上宽度的准确率最高，为89.7%。股骨的准确率与之前报道的泰国人群距骨和跟骨性别估计的准确率相近。因此，特别是在下肢残留且没有骨盆的情况下。
