Ekizoglu Oguzhan, Hocaoglu Elif, Inci Ercan, Bilgili Mustafa Gokhan, Solmaz Dilek, Erdil Irem, Can Ismail Ozgur
From the Department of Forensic Medicine (OE); Department of Radiology (EH, EI, IE); Department of Orthopaedics, Bakirkoy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey (MGB); Department of Rheumatology, Namık Kemal University, Faculty of Medicine, Tekirdag, Turkey (DS); and Department of Forensic Medicine, Dokuz Eylul University, Faculty of Medicine, Izmir, Turkey (IOC).
Medicine (Baltimore). 2014 Dec;93(27):e240. doi: 10.1097/MD.0000000000000240.
We aimed to show the utility and reliability of sternal morphometric analysis for sex estimation.Sex estimation is a very important step in forensic identification. Skeletal surveys are main methods for sex estimation studies. Morphometric analysis of sternum may provide high accuracy rated data in sex discrimination. In this study, morphometric analysis of sternum was evaluated in 1 mm chest computed tomography scans for sex estimation. Four hundred forty 3 subjects (202 female, 241 male, mean age: 44 ± 8.1 [distribution: 30-60 year old]) were included the study. Manubrium length (ML), mesosternum length (2L), Sternebra 1 (S1W), and Sternebra 3 (S3W) width were measured and also sternal index (SI) was calculated. Differences between genders were evaluated by student t-test. Predictive factors of sex were determined by discrimination analysis and receiver operating characteristic (ROC) analysis. Male sternal measurement values are significantly higher than females (P < 0.001) while SI is significantly low in males (P < 0.001). In discrimination analysis, MSL has high accuracy rate with 80.2% in females and 80.9% in males. MSL also has the best sensitivity (75.9%) and specificity (87.6%) values. Accuracy rates were above 80% in 3 stepwise discrimination analysis for both sexes. Stepwise 1 (ML, MSL, S1W, S3W) has the highest accuracy rate in stepwise discrimination analysis with 86.1% in females and 83.8% in males. Our study showed that morphometric computed tomography analysis of sternum might provide important information for sex estimation.
我们旨在展示胸骨形态计量分析在性别估计中的实用性和可靠性。性别估计是法医鉴定中非常重要的一步。骨骼检查是性别估计研究的主要方法。胸骨的形态计量分析在性别鉴别中可能提供高精度的数据。在本研究中，对1毫米胸部计算机断层扫描中的胸骨进行形态计量分析以进行性别估计。443名受试者（202名女性，241名男性，平均年龄：44±8.1[分布：30 - 60岁]）纳入研究。测量了胸骨柄长度（ML）、胸骨体长度（2L）、第1块胸骨节宽度（S1W）和第3块胸骨节宽度（S3W），并计算了胸骨指数（SI）。通过学生t检验评估性别之间的差异。通过判别分析和受试者工作特征（ROC）分析确定性别的预测因素。男性胸骨测量值显著高于女性（P < 0.001），而男性的SI显著较低（P < 0.001）。在判别分析中，MSL在女性中的准确率为80.2%，在男性中为80.9%，具有较高的准确率。MSL还具有最佳的敏感性（75.9%）和特异性（87.6%）值。在两性的三步判别分析中，准确率均高于80%。逐步判别分析1（ML、MSL、S1W、S3W）在逐步判别分析中的准确率最高，女性为86.1%，男性为83.8%。我们的研究表明，胸骨的形态计量计算机断层扫描分析可能为性别估计提供重要信息。
