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Flashcards in Wound Analysis Deck (24)
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1

Two major classifications of wounds

Open wounds
Closed wounds

2

How are open wounds classified?

By how they are made

3

How are closed wounds classified?

By the type of damage

4

Contusion

Closed wound; caused by a blunt force trauma that damages tissue under the skin

5

Hematoma

Closed wound; Caused by damage to a blood vessel that in turn causes blood to collect under the skin

6

Crush injury

Closed wound; Caused by a great or extreme amount of force applied to the tissue

7

Abrasion

Open wound; Superficial wound in which the topmost layer of the skin (epidermis) is scraped off typically in an irregular fashion

8

Laceration

Open wound; Tear-like wound down to the underlying tissue caused by a blunt force trauma to the flesh, deeper and more irregular than abrasions

9

Incisions

Open wound; Caused by a clean, sharp-edged object such as a knife, razor, or glass

10

Puncture

Open wound; Caused by an object puncturing the skin, such as a nail or needle

11

Penetration

Open wound; Caused by an object such as a knife or bullet entering and coming out of the skin

12

How to indicate type of knife by wound (5)

1 or 2 sided blade
Blade dimensions
Length
Serrated or smooth
Presence of a hilt

13

Gunshot wounds

Caused by a bullet or similar projectile driving into or through the body; most often stay in the body but can be through-and-through

14

What kind of bullet does a cop use? Why?

Hollow point; it delivers more energy to the point of contact and doesn't typically exit the body

15

Bullets damage in three ways...

Laceration and crushing
Cavitation
Shock waves

16

Laceration and crushing by bullet

Direct impact; tumbles and fragments; yaw (angles away from the straight line)

17

Permanent cavity

Hole made by the bullet

18

Temporary cavity

Caused by the rupture of cells by a vacuum

19

Shock Waves

Hydraulic shock caused by the energy and force of the bullet

20

Entrance wound shape

Smaller, oval or circular, abrasion collar, tattooing

21

Exit wound shape

Larger, more jagged

22

Two types of gun shot residue

GSR on the victim/victim's clothing
GSR on the shooter's hand

23

Gun shot residue components

Smoke, soot, nitrates, gunpowder particles that didn't burn, and debris

24

Contact gunshot wounds

When the muzzle is in contact with the skin