Download - Unit 7: The Body
Unit 7: The Body
7.4 Wounds
Wound Types
• Blunt Force Trauma
• Sharp Force Trauma
Structure of the Skin
Blunt Force Trauma
• Abrasions– Brush abrasions– Impact abrasions– Patterned abrasions
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
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
Blunt/Sharp Force Wounds
• Chop Wounds– Cleavers, axes, and machetes– Possible marginal abbrasions– Bone damage common
Sharp Force Trauma
• Stab Wounds– Deeper than long– Clean edges, no abbrasions – “blunt” v. “sharp” sides– Gaping wound below
Sharp Force Trauma
Sharp Force Trauma
• Incised Wounds (cuts)– Are produced by sharp-edged objects such as a
knife, glass, metal, or even paper.– Clean edges
Specific Wounds
• Hesitation marks– Suicide victims often make several attempts
before successfully cutting all the way through the skin.
Specific Wounds
• Defensive wounds– Found on hands and arms
Identifing Sharp Force Wounds
• Often trauma is compounded. • This is an abraded contusion– Abrasion and contusion