Comprehensive evaluation of the greater sciatic notch for sexual estimation through three-dimensional metric analysis...

Area of Science:

• Forensic Anthropology
• Anatomical Measurement
• Biometrics

Background:

• Sexual estimation is crucial for identifying unknown skeletons.
• Current visual assessment methods for the greater sciatic notch lack objectivity.
• 3D metric analysis offers reproducible measurements for anatomical structures.

Purpose of the Study:

• To develop and validate a precise 3D metric method for sexual estimation using the greater sciatic notch.
• To assess the accuracy of various measurements of the greater sciatic notch.
• To introduce a novel measurement, the "arithmetic posterior angle of the greater sciatic notch".

Main Methods:

• Reconstruction of 3D models from radiographic images.
• Automated measurement program with landmark verification for the greater sciatic notch.
• Analysis of distances, angles, and dimensions, including the novel "arithmetic posterior angle".

Main Results:

• 15 out of 28 measurements demonstrated over 85% accuracy.
• Measurements near the posterior inferior iliac spine showed high accuracy (93.1%).
• The "arithmetic posterior angle of the greater sciatic notch" achieved over 90% accuracy.

Conclusions:

• 3D metric analysis provides a reproducible and stable method for greater sciatic notch measurements.
• The developed method is effective for sexual estimation in the contemporary Korean population.
• This approach offers a valuable tool for forensic anthropology and skeleton identification.