Blunt violence Flashcards Preview

Forensic Genetics and Medicine > Blunt violence > Flashcards

Flashcards in Blunt violence Deck (6)
1

What is blunt violence?

Mechanial work of a blunt object/weapon that hits against the body

(Squeezing, pinching, biting, etc. give similar injuries, but do not fall under the classic definition of blunt violence)

2

What kind of injury is

  • skin damage, e.g. skratch mark
  • bleeding within the dermis and adipose tissue
  • skin damage and bleeding
  • subcutaneous bleeding

  • injury at surface of the skin
  • bruise
  • combined injury
  • laceration

3

What can be used for age determination of haematoma?

  • light microscopy: inflammation, hemosiderin in macrophages
  • colour
    • blue-violet without yellow-green streak zone: <24-48 hours
    • a few mm wide periphery yellow streak zone: 2-3 days
    • wider periphery yellow streak zone: >3 days
    • yellow: <10 days
    • brown: > 10 days

4

Vital vs post mortal injury

  • excoriation (skin scratches)
  • laceration (ruptures)
  • haematoma

  • excoriation
    • vital: red-brown, rough and matte
    • post mortal: yellow, waxy, shiny
  • laceration:
    • vital: bloody wound edges
    • post mortal: blood-free wound edges
  • haematoma:
    • section: vital cannot be scraped off

5

What are the mechanics of skeletal injury?

  • small hit area: stabbing crime
  • large hit area: crush injury

6

types of skeletal injuries

  • angulation
  • rotation: spiral fracture
  • axial compression: vertebra body, heel bone
  • combined fractures
  • ulna fractures
  • MCP-V-impressions (punch fractures)
  • cranium injuries
    • linear cranium fractures
    • impression fractures
    • markings
    • cranium base fractures, ring fracture
    • facial injuries (Clément Le Fort)