Basic Traumatic injuries

Anotacoes

Basic Traumatic Injuries Definition: An injury or wound is defined as any disruption of anatomical continuity or physiological function caused by the application of mechanical force. Classification of injuries may be divided into two major categories: 1. Injuries in which the skin remains intact (closed injuries): 1. Bruises (contusions) 2. Hematomas 3. Erythema 2. Injuries involving disruption of the skin: 1. Abrasions 2. Lacerations 3. Incised wounds (cuts, slashes, stab wounds) 4. Chop wounds (split wounds) 5. Prick or puncture wounds Abrasions Abrasions are superficial injuries to the skin, usually involving the loss of the epidermis due to frictional or compressive forces. Due to the structure of dermal papillae, many abrasions extend into the corium, frequently resulting in bleeding. In the living, abrasions develop a brown crust within 12–24 hours. After 3–4 days, the crust begins to detach, and by 7–8 days a depigmented linear scar may remain, which eventually disappears. Postmortem, abrasions become stiff, leathery, and brown due to desiccation—commonly seen in ligature marks from hanging or strangulation. For forensic documentation, abrasions should be evaluated based on:...