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Patterned injuries from screwdrivers.

Roger W Byard^1,2

¹Forensic Science SA, Adelaide, Australia. roger.byard@sa.gov.au.

Forensic Science, Medicine, and Pathology

|June 15, 2022

Summary

Phillips head screwdrivers can cause unique cruciate stab wounds, sometimes fatal. This case highlights screwdriver-inflicted injuries, contrasting them with other screwdriver types.

Keywords:

Cruciate pattern Death Phillips head Screwdriver Slotted Stabbing

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Area of Science:

Forensic Pathology
Traumatology

Background:

Screwdrivers are common tools, yet rarely implicated in fatal assaults.
Understanding weapon characteristics is crucial for forensic analysis.

Observation:

A fatality resulted from a Phillips head screwdriver, causing multiple cruciate puncture wounds (approx. 5x5 mm).
The fatal injury was a single penetrating chest wound transfixing the aorta.

Findings:

Phillips head screwdrivers produce distinctive cruciate wound patterns due to their cross-shaped tips.
Wound dimensions correlate with the screwdriver's tip shape (5x5 mm).
Distinguishing injuries from Phillips vs. flat head screwdrivers is important.

Implications:

This case provides insight into the specific injury patterns caused by Phillips head screwdrivers.
Forensic identification of stabbing weapons can be aided by wound analysis.
The study underscores the potential lethality of commonly available tools.