Unit 7: The Body

1. Unit 7: The Body 7.4 Wounds

2. Wound Types • Blunt Force Trauma • Sharp Force Trauma

3. Structure of the Skin

4. Blunt Force Trauma • Abrasions • Brush abrasions • Impact abrasions • Patterned abrasions

5. Blunt Force Trauma • Contusions (bruise) • Trauma caused by broken blood vessels below the surface of the skin. • Can also be on organs • Hematoma • blood causes swelling • Ex. Subdural Hematoma

7. Blunt Force Trauma • Lacerations • A tear in the tissue caused by a sliding or crushing force. • Extreme force by blunt objects. (not sharp objects) • Rough edges/shallow • Tissue Bridging

8. Blunt/Sharp Force Wounds • Chop Wounds • Cleavers, axes, and machetes • Possible marginal abbrasions • Bone damage common

9. Sharp Force Trauma • Stab Wounds • Deeper than long • Clean edges, no abbrasions • “blunt” v. “sharp” sides • Gaping wound below

10. Sharp Force Trauma

12. Sharp Force Trauma • Incised Wounds (cuts) • Are produced by sharp-edged objects such as a knife, glass, metal, or even paper. • Clean edges

13. Specific Wounds • Hesitation marks • Suicide victims often make several attempts before successfully cutting all the way through the skin.

14. Specific Wounds • Defensive wounds • Found on hands and arms

15. Identifing Sharp Force Wounds

16. Often trauma is compounded. • This is an abraded contusion • Abrasion and contusion