Experimental simulation of reentry shots using a skin-gelatine composite model.

Area of Science:

• Forensic Science
• Ballistics
• Wound Analysis

Background:

• Reentry gunshot wounds often present atypical appearances.
• Understanding reentry wound characteristics is crucial for forensic investigations.

Purpose of the Study:

• To systematically analyze the morphological characteristics of reentry gunshot wounds.
• To investigate the influence of segment separation on reentry wound appearance.

Main Methods:

• Utilized 9-mm Parabellum full metal-jacketed projectiles.
• Fired projectiles at skin-gelatine composite models simulating consecutive body segment passage.
• Examined wound morphology and particle displacement in the bullet track.

Main Results:

• When body segments were separated, reentry wounds showed no distinctive features compared to typical exit wounds.
• When body segments were in contact, reentry and exit wounds exhibited similar central defects and abrasion areas.
• Skin particles were displaced along the bullet track in the second segment from both exit and reentry sites.

Conclusions:

• The appearance of reentry wounds is highly dependent on the proximity of the exit and reentry sites.
• Morphological similarities between exit and reentry wounds can occur, particularly in contact scenarios.
• Ballistic principles explain particle displacement patterns observed in simulated reentry tracks.