Suicide attempts involving power drills

Area of Science:

• Forensic Pathology
• Neuropathology
• Trauma Surgery

Background:

• Deaths involving power drills are infrequent, often resulting from accidents or suicides.
• Distinguishing power drill wounds from projectile injuries is crucial in forensic investigations.

Observation:

• A 61-year-old male presented with a fatal penetrating intracranial injury caused by a power drill.
• The injury involved a 5 mm circular wound to the forehead, penetrating 75 mm into the frontal lobe white matter.
• The cause of death was attributed to hemorrhage from self-inflicted abdominal stab wounds, with the power drill injury being a contributing factor.

Findings:

• The power drill wound mimicked a bullet entrance, with drill chuck marks potentially mistaken for muzzle imprints.
• Lack of internal bevelling at the wound site aided in differentiating it from a projectile entrance.
• Significant brain penetration occurred without immediate lethal vascular or parenchymal damage.

Implications:

• Power drill injuries require careful forensic examination to avoid misclassification as ballistic trauma.
• Understanding the characteristics of power drill wounds is essential for accurate determination of injury mechanisms.
• This case underscores the potential for severe cranial injury from power drills, even when not the primary cause of death.