Apophyseal ossification of the iliac crest in forensic age estimation: New standards for modern Australian subadults using computed tomography

Lottering, Nicolene, Reynolds, Mikaela S., MacGregor, Donna M., Izatt, Maree T., Grant, Caroline A., Adam, Clayton J., & Gregory, Laura S. (2016) Apophyseal ossification of the iliac crest in forensic age estimation: New standards for modern Australian subadults using computed tomography. In 68th Annual Scientific Meeting of the American Academy of Forensic Sciences, 22-27 February 2016, Las Vegas, Nevada.

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Abstract

Risser grading on multi slice CT of Australian subadults reveals interesting anatomical deviations, highlighting flaws in the ossification progression stated by Risser. Appearance of the apophysis is witnessed 6 months to 12 months earlier in multi slice CT than pseudo-radiographs. Circumventing radiographic limitations such as superimposition, a modified eight-stage multi slice CT scoring-tier was developed for appearance and fusion of the apophysis, demonstrating origins from three secondary ossification centres. Complete fusion/obliteration occurs between 18.4 years to 19.7 years in males and 19.3 years to 20.3 years in females; indicating secular change in Australian children in contrast to anthropological standards of Coimbra individuals and the 23-year demarcation published by previous authors. The contributions of this original research are extensive. Caution in the derivation of ossification standards from conventional radiographs is advised, with conflicting timings and morphological progression to CT assessment. Retrospective clinical data acquisition provides the ideal catalyst for the advancement of anthropological subadult research, demonstrated by the construction of refined, Australian standards for age estimation of the current milieu. Bayesian posteriors of the multi slice CT scoring-tier demonstrate successful doli incapax age estimation for utility in criminal proceedings.

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ID Code: 97529
Item Type: Conference Item (Presentation)
Refereed: Yes
Additional URLs:
Keywords: age estimation, subadult, iliac crest apophysis, risser sign, risser grade, scoliosis, computed tomography, CT
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > CLINICAL SCIENCES (110300) > Orthopaedics (110314)
Australian and New Zealand Standard Research Classification > STUDIES IN HUMAN SOCIETY (160000) > ANTHROPOLOGY (160100) > Biological (Physical) Anthropology (160102)
Divisions: Current > Schools > School of Biomedical Sciences
Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2016 American Academy of Forensic Sciences
Copyright Statement: Copyright 2016 by the AAFS. Unless stated otherwise, noncommercial photocopying of editorial published in this periodical is permitted by AAFS. Permission to reprint, publish, or otherwise reproduce such material in any form other than photocopying must be obtained by AAFS.
Deposited On: 19 Jul 2016 22:35
Last Modified: 20 Jul 2016 21:50

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