Shape and Size Differences of the First Lumbar Vertebra (L1) Among Age Groups Using Geometric Morphometric Approach

DOI

10.2991/978-94-6463-760-1_25How to use a DOI?

Keywords

Age; L1 Vertebra; Centroid Size; Geometric Morphometric; 3D CT Scan

Abstract

Background: In forensic identification, age determination is a critical aspect to establish. Geometric morphometric (GM) is one of the approaches that can be utilized for age estimation. This study aims to analyze the differences in the shape and size of the L1 vertebra among different age groups using GM techniques on 3D CT scan images. Method: This study utilized 3D CT scans of the abdominal region from 219 subjects divided into three age groups: 20–40 years, 41–60 years, and >60 years. A total of 32 landmarks were applied using the Stratovan Checkpoint software. Geometric morphometric analysis was performed using MorphoJ and SPSS software. Results: There were significant differences in the size (centroid size) of the L1 vertebra among age groups, with a p-value of 0.002 (<0.05). The first principal component (PC1) contributed 16.849% to the variation in the shape of the L1 vertebra and showed significant differences among age groups (p = 0.005). Multiple Discriminant Analysis (MDA) indicated a correct classification accuracy of 37.9% based on age groups. Conclusions: This study identified significant differences in the shape and size of the L1 vertebra among age groups. However, based on the MDA results, the L1 vertebra does not appear to be a reliable indicator for age identification.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Afiana Rohmani
AU  - Umniatuz Zahroh
AU  - Arief Tajally
PY  - 2025
DA  - 2025/07/03
TI  - Shape and Size Differences of the First Lumbar Vertebra (L1) Among Age Groups Using Geometric Morphometric Approach
BT  - Proceedings of the 3rd Lawang Sewu International Symposium on Medical and Health Sciences (LEWIS-MHS 2024)
PB  - Atlantis Press
SP  - 284
EP  - 297
SN  - 2468-5739
UR  - https://doi.org/10.2991/978-94-6463-760-1_25
DO  - 10.2991/978-94-6463-760-1_25
ID  - Rohmani2025
ER  -