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4 - Wounds Part1 - WOUNDS:Presented By Anas Ibrahim AL...

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Unformatted text preview: WOUNDS :Presented By Anas Ibrahim AL Karasneh DEFINITION OF WOUNDS Medical definition: Disruption of the continuity of the tissues produced by external mechanical force. Legal definition: Breach of the full thickness of the skin Wounds Medico legal divisions of wounds accidental- 1 sucidal-2 homicidal- 3 self inflecting- 4 Types of wounds Types of wounds Abrasions Lacerations Bruises Incised Wounds Types of wounds 1 ) ABRASIONS Abrasions Abrasions • It is the most superficial type of injuries • that does not penetrate the full thickness of the skin (usually confined to the epidermis). • Usually caused by blunt force trauma. Characteristics •They are usually not life threatening although they are painful. •They heel without scaring. •Bleeding/Exudation is slight and leads to crust/scab formation. •Might be associated with bruising and laceration Types of abrasions Types of abrasions 1) Direct vertical impact: The force is usually applied vertically onto the skin and causes crushing of the epidermis. The causative object may stamp it’s shape on the • skin. • Examples: • fingernail impression and bite mark, and marks of a vehicle radiator on a pedestrian victim or the pattern of a floor grid on to which a person fallen. Types of abrasions Types of abrasions 2­ Tangential impact( brush abrasions) : • Loss or scraping of the epidermis due to friction against a rough surface (graze) or a sharp surface (scratch) • Broader surface • Example of a brush abrasion of the abdomen by scraping along a rough sooted and rusty surface of a metal tank during a fall. This example of brush abrasions .It illustrates a motorcycle fatality, where the victim has come in contact with the road surface. Types of abrasions Types of abrasions 3­ Fingernail abrasions • these are important because of their frequency in assaults especially child abuse, sexual attacks and strangulations . • Often associated with focal bruises. Fingernails abrasions are most often seen on the neck, face, and the upper arms and the forearm Types of abrasions Types of abrasions 4­ Post mortem abrasions: unlike post mortem bruises, artefactual abrasions are common. • They may have been inflicted after death from a variety of causes, incliding dragging a corpse or buffering in moving water. Some post mortem animal injuries resemble abrasions such as insect bites. • • Bruising and abrasions along the right side and on the abdomen could have come from a number of causes, including being dragged & pushed down to the ground. Importance of abrasions in Importance of abrasions in forensics forensics •Always reflects the site of impact. •Often indicates the causative agent. •Often indicates the direction of impact. •Helps in determining the time of injury: Cont.. Cont.. • Helps in determining the time of injury: Fresh: hyperemia, oozing serum and usually without bleeding. Up to 36 hours: hyperemia and soft yellow crust of dried serum. 2­3 days: dry brown scab. 6­7 days: falling of scab leaving a red surface which disappears without leaving a scar within 2­3 weeks. “When you were born, you were crying and everyone around you was smiling. Live your life so that when you die, you're the one who is smiling and everyone around you is crying.” ...
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