Types of Wounds - Forensic Experiments - Lecture Slides, Slides of Forensics

Download Types of Wounds - Forensic Experiments - Lecture Slides and more Slides Forensics in PDF only on Docsity! WOUNDS Docsity.com 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 Docsity.com \ \ Tangential Abrasion Types of wounds Lom o c intradermal Bruise Laceration Incised bruise wound Docsity.com 1 ) ABRASIONS Docsity.com 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. Docsity.com 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 Docsity.com This example of brush abrasions .It illustrates a motorcycle fatality, where the victim has come in contact with the road 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. Docsity.com 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 Docsity.com — ; Cy Sel www. forensicindia.com i Docsity.com Importance of abrasions in 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: Docsity.com 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. 2-3 days: dry brown scab. 6-7 days: falling of scab leaving a red surface which disappears without leaving a scar within 2-3 weeks. Docsity.com