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Atypical gunshot exit defects to the cranial vault
O C Smith1, H E Berryman, S A Symes
1University of Tennessee, Memphis.
Journal of Forensic Sciences
|March 1, 1993
Summary
Atypical cranial exit wounds can mimic blunt trauma due to radial fractures, challenging typical identification. Understanding bone fracture biomechanics is key for accurate interpretation of these complex wound patterns.
Area of Science:
- Forensic pathology
- Biomechanics
- Skeletal trauma analysis
Background:
- Cranial exit wounds typically exhibit external beveling.
- Variations in exit wound morphology are documented, influenced by factors like keyhole phenomena and pre-existing fractures.
Observation:
- Two cases presented atypical cranial exit wound morphology resembling blunt force trauma.
- These wounds lacked typical external beveling despite being exit wounds.
Findings:
- Radial fractures, generated by the exiting projectile's impact, facilitated passage without producing characteristic exit beveling.
- The biomechanics of bone fracture, analysis of radiographs, and low-power microscopy are crucial for interpreting these atypical fractures.
Implications:
- Accurate identification of atypical exit wounds is vital in forensic investigations.
- This study highlights the importance of considering biomechanical principles and advanced imaging in wound analysis.
- Forensic examiners must be aware of fracture patterns that deviate from classic descriptions to avoid misinterpretation.