Differentiation of ante-mortem and post-mortem fractures with MRI: a case report
T D Ruder1, T Germerott, M J Thali
1Centre of Forensic Imaging and Virtopsy, Institute of Forensic Medicine, University of Bern, Switzerland.
Abstract:
We describe a case of a fatal speed flying accident in which the victim was electrocuted, burned and fell from a great height. Post-mortem imaging revealed acute appearing fractures on CT, without bone marrow oedema on MRI. Based on the known clinical imaging findings of bone marrow oedema in acute fractures, we concluded that the speed flyer died from electrocution rather than the fall and that the fractures occurred post-mortem. Radiological imaging augmented the reconstruction of the peri-mortem events. Further research is needed to assess whether bone marrow oedema in acute fractures is a reliable vital sign.
Insights
A fatal speed flying accident victim died from electrocution, not the fall. Post-mortem imaging indicated fractures occurred after death, highlighting the importance of bone marrow edema in determining vital signs.
Area of Science:
- Forensic pathology
- Radiology
- Trauma research
Background:
- Speed flying accidents can result in severe trauma.
- Distinguishing between peri-mortem and post-mortem injuries is crucial in forensic investigations.
- Bone marrow edema on MRI is generally considered an indicator of acute fractures.
Observation:
- A fatal speed flying accident case involved electrocution, burns, and a fall.
- CT scans showed acute fractures, but MRI revealed no bone marrow edema.
- The victim experienced electrocution and burns prior to the fall.
Findings:
- The absence of bone marrow edema suggested fractures were post-mortem.
- Electrocution was determined as the cause of death, not the fall.
- Radiological imaging aided in reconstructing peri-mortem events.
Implications:
- This case underscores the diagnostic value of bone marrow edema in differentiating vital and post-mortem trauma.
- Further research is warranted to validate bone marrow edema as a reliable vital sign in acute fractures.
- Radiological techniques can significantly enhance forensic investigations of complex trauma cases.
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