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Related Experiment Videos

Post-mortem changes of the middle ear: multislice computed tomography study.

Fabrice Dedouit1, Florence Loubes-Lacroix, Rémi Costagliola

  • 1Service de Médecine Légale, Hôpital de Rangueil, 1 avenue du Professeur Jean Poulhès, TSA 50032, 31059 Toulouse Cedex 9, France.

Forensic Science International
|July 24, 2007
PubMed
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Post-mortem changes can disrupt delicate ear ossicles, appearing as damage on CT scans. Forensic radiologists must distinguish these taphonomic changes from ante-mortem trauma in skeletal remains.

Area of Science:

  • Forensic Radiology
  • Taphonomy
  • Otopathology

Background:

  • Taphonomic changes in skeletal remains can be misinterpreted as ante-mortem trauma.
  • The ossicular chain is particularly fragile and susceptible to post-mortem disruption.
  • Forensic radiology offers advanced visualization of subtle skeletal structures.

Purpose of the Study:

  • To evaluate the utility of multislice computed tomography (MSCT) in identifying post-mortem taphonomic changes in the ossicular chain.
  • To differentiate between ante-mortem pathology and post-mortem degradation of ossicles.
  • To highlight the importance of recognizing taphonomic alterations in forensic imaging of exhumed bodies.

Main Methods:

  • Multislice computed tomography (MSCT) was performed on six dry, naturally skeletonized skulls.

Related Experiment Videos

  • Examination focused on the temporal bones and associated ossicular structures.
  • MSCT was also applied to an exhumed body to demonstrate taphonomic effects on ossicles.

    • Main Results:

    • All six dry skulls exhibited disruption or absence of ossicular bones.
    • The exhumed body showed missing left ossicles and a disrupted right ossicular chain.
    • These findings confirm post-mortem degradation of ossicles, not ante-mortem injury.

    Conclusions:

    • MSCT is effective in visualizing taphonomic changes in the ossicular chain.
    • Radiologists must be aware of post-mortem taphonomic alterations to prevent misinterpretation as trauma.
    • Accurate interpretation is crucial for forensic investigations, especially with exhumed remains.