22 - Firearm Injuries Part1

22 - Firearm Injuries Part1 - Firearm Injuries By: Nour Abu...

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By: Nour Abu Al Sha’ar Firearm Injuries
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Some terminology Barrel: the metal tube through which the bullet is fired. Bore: the inside of the barrel, either: Smooth bore: Shotguns. Not smooth bore: rifles, pistols.
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Muzzle: the end of the barrel out of which the bullet comes out. Primer : volatile substance that ignites when struck to detonate the powder in a cartridge.
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The holder presses the firing pin which in turn strikes the primer which ignites the powder and produces large amount of hot gas. Produces very high pressure that fires the bullet forcefully through the barrel leaving the muzzle, and onto the target. What happens?
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Mechanism of injury: As the missile traverses the body it causes injury by: 1. Basic contact of bullet and it’s fragments (if present) with the tissue, so larger bullets create bigger damage at the same velocity. 2. Transferring some of its available kinetic energy to the tissue around it, so increasing velocity greatly increases damage. 3. It also causes cavitations in the tissue it passes as
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22 - Firearm Injuries Part1 - Firearm Injuries By: Nour Abu...

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