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Age-related morphological changes of the pubic symphyseal surface: using three-dimensional statistical shape

Yuyoung Kim1, Kang-Woo Lee2, Sookyoung Lee3

  • 1Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Institute, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, 03722, Republic of Korea.

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Summary

Statistical shape modeling reveals key pubic symphyseal surface changes for accurate age estimation. This forensic anthropology research enhances age-at-death determination by detailing morphological variations across age groups.

Keywords:
Age-at-death estimationAge-related morphological changesForensic anthropologyHuman variationPubic symphyseal surfaceStatistical shape modeling

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Area of Science:

  • Forensic Anthropology
  • Biomedical Imaging
  • Computational Anatomy

Background:

  • Accurate age estimation is crucial in forensic anthropology.
  • Computational analysis of the pubic symphyseal surface offers quantitative precision.
  • Existing methods often lack detailed insights into age-related morphological changes.

Purpose of the Study:

  • To utilize statistical shape modeling (SSM) to elucidate age-related morphological changes in the pubic symphyseal surface.
  • To identify factors contributing to these changes and pinpoint variations distinguishing age groups.
  • To enhance age-at-death estimation techniques.

Main Methods:

  • Computed tomography (CT) scans of 252 individuals were analyzed.
  • Landmark-based alignment and preprocessing were applied to the CT data.
  • Statistical shape modeling was employed to visualize and quantify morphological variations.

Main Results:

  • Significant age-related morphological changes in the pubic symphyseal surface were visualized and validated.
  • Key shape variations crucial for differentiating between consecutive age groups were identified.
  • The study demonstrated the effectiveness of SSM in capturing subtle morphological differences.

Conclusions:

  • Statistical shape modeling provides valuable insights into the intricate nature of age-related morphological changes.
  • The findings enhance the understanding of pubic symphyseal surface morphology for age estimation.
  • This research offers a robust foundation for improving age-at-death estimation in forensic contexts.