Part // ue Aimin, Ph. D, ED Department of Forensic Medicine School of Basic Medical Sciences Fudan University
Xue Aimin， Ph.D.，M.D. Department of Forensic Medicine School of Basic Medical Sciences Fudan University
Basic types of mechanical injury based on morphological features Abrasion Contusion Wound ■ Fracture ■ Rupture of viscera fragmentation of whole body Page 2
Page 2 Abrasion Contusion Wound Fracture Rupture of Viscera Fragmentation of whole body Basic types of mechanical injury based on morphological features:
Macerated perianal and gluteal skin of infant treated with senna laxative, initially diagnosed as blunt force trauma and believed a result of child abuse Page 3
Page 3 Macerated perianal and gluteal skin of infant treated with senna laxative, initially diagnosed as blunt force trauma and believed a result of child abuse
Hesitation wound Defense Wound Sharp instrument Blunt instrument Tear of the right middle finger of the victim assaulted with 2x 4 board, originally misinterpreted as a sharp force injury. Page 4
Page 4 Tear of the right middle finger of the victim assaulted with 2”x 4” board, originally misinterpreted as a sharp force injury. Hesitation wound Defense Wound Sharp instrument Blunt instrument
Triangular tear in the victims scalp with heavily scraped margins Star-shaped overlapping multiple resulting from an impact with the tears of the victims scalp with corner of a2”x4” board; also seen a fragmentation of the underlying linear tear with a surrounding scrape calvarium and bruise Page 5
Page 5 Star-shaped overlapping multiple tears of the victim’s scalp with fragmentation of the underlying calvarium. Triangular tear in the victim’s scalp with heavily scraped margins resulting from an impact with the corner of a 2”x 4” board; also seen a linear tear with a surrounding scrape and bruise
Overlapping linear pattern of tearing elsewhere in the scalp of the same victim. Note the heavy scrapes of the margins of the lacerated scalp Tissue bridges are at the margins Page 6
Page 6 Overlapping linear pattern of tearing elsewhere in the scalp of the same victim. Note the heavy scrapes of the margins of the lacerated scalp. Tissue bridges are at the margins
Mechanical injury Part v Firearm and Explosive Injuries Page 7
Page 7 Part V Firearm and Explosive Injuries Mechanical Injury
e un/ Mechanic
Page 8 Mechanical Injury
Mechanical Page 9
Page 9 Mechanical Injury
AK-47 Mechanical Niu Page 10
Page 10 AK-47 Mechanical Injury