Comprehensive evaluation of the greater sciatic notch for sexual estimation through three-dimensional metric analysis using computed tomography based models

Dong Ho Kim, So Hyun Lee, Sang Seob Lee, Yi Suk Kim, Dae Kyoon Park, Seung Ho Han, U. Young Lee

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The greater sciatic notch is an effective indicator for sexual estimation, which is the initial process to identify unknown skeleton. Visual assessment is the mainstream of analysis methods; however, the subjectivity of researchers is also questioned. Metric method using three-dimensional models reconstructed from radiographic images can ensure reproducible and stable measurement of the greater sciatic notch. In this study, the greater sciatic notch was analyzed in various manners, including distances, angles, and dimensions, with the aid of an automatic measurement program and a landmark verification system. Among 28 items, 15 measurements showed more than 85% accuracy. Measurements related to the posterior part of the greater sciatic notch near the posterior inferior iliac spine particularly showed higher accuracy (93.1%). To test this observation, “arithmetic posterior angle of the greater sciatic notch” a generalized form of partial angle of the greater sciatic notch, was designed. It showed more than 90% accuracy. When the results of the three-dimensional measurements were applied to classify dry bones, it proved to be valid in contemporary Korean population. The method and results of this study can be referenced in wider use of the greater sciatic notch analysis.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalLegal Medicine
Volume35
DOIs
StatePublished - Nov 2018

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (grant number 2011-0014096 , 2015R1C1A1A01052630 ) and the Songeui Basic Science Program funded by The Catholic University of Korea (grant number 5-2014-B0001-00241 ). The authors would also like to thank Professor In-Hyuk Chung, Professor Emeritus of Yonsei University for using dry bones.

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

  • Dry bone
  • Greater sciatic notch
  • Metric analysis
  • Population specific
  • Sexual estimation
  • Three-dimensional model

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