Stab Wound

Stab Wound in United Kingdom

The identification and description of wounds may have serious medico-legal implications. Studies have shown that doctors incorrectly identify common wounds and injuries (Jones 2003; Reijnders et al 2005; Bajanowski et al 2001).

Stab Wound in Forensic Medicine

In the category of sharp force traumas, stab wounds are incised wounds where the length of injury on the surface is less than the depth of penetration into the body, and are the result of a thrusting action, where the force is delivered along the long axis of a narrow, pointed object. The force of impact is concentrated at the tip of the implement, and the sharper the tip, the easier it will penetrate the skin. The weapons of choice in the majority of assaults – both domestic and ‘on-the-street’ include lock knives, sheaf knives and kitchen knives.

Stab Wound and patterns of sharp force trauma

In the context of sharp force trauma, defence wounds obtained whilst fending off an assailant with a knife are typically found on the dorsum of the hand and backs of the forearms (ulnar border).

In the pathology of sharp force trauma, incised wounds caused by any implement or object having a sharp edge can include knives and broken glass, for example.

Resources

  • Andersen J, Birkbeck AE, Thomson RD, Vanezis P (1999), ‘Puncture resistance and tensile strength of skin simulants’, Proc Inst Mech Eng [H] 213(6):493-501
  • Byard RW, Gehl A, Tsokos M (2005), ‘Skin tension and cleavage lines (Langer’s lines) causing distortion of ante- and post mortem wound morphology’, Int J Legal Med 119:226-230
  • Chadwick E.K.J., Nicol A.C., Lane J.V., Gray T.G.F. (1999), ‘Biomechanics of knife stab attacks’, Forensic Science International Vol 105: 35-44
  • Ciallella C., Caringi C., Aromatario M. (2002), ‘Wounds inflicted by survival-knives’, Forensic Science International 126(1) 82-87
  • Green M.A. (1978), ‘Stab wound dynamics – a recording technique for use in medico-legal investigations’, Journal of Forensic Science Society, Vol 18: 161-163
  • Haut RC (1989), ‘The effects of orientation and location on the strength of dorsal rat skin in high and low speed tensile failure experiments’, Journal of biomechanical engineering’, 111 (2):136-146
  • Horsfall I., Prosser P.D., Watson C.H., Champion S.M. (1999), ‘An assessment of human performance in stabbing’, Forensic Science International Vol. 102: 79-89
  • Hunt A.C., Cowling R.J. (1991), ‘Murder by stabbing’, Forensic Science International, Vol 52:107-112
  • Hunt A.C. (2003), ‘Morphology of knife wounds’, Presentation to the British Association in Forensic Medicine Winter Meeting, Cardiff, Wales 29th November 2003
  • Karlsson T (1998), ‘Homicidal and suicidal sharp force fatalities in Stockholm, Sweden. Orientation of entrance wounds in stabs gives information in the classification’, Forensic Science International 93(1) 21-32
  • Knight B. (1975), ‘The dynamics of stab wounds’, Forensic Science Vol 6: 249-255
    Knight B. (1996), ‘Forensic Pathology’, 2nd Ed, Arnold
  • Levy V. and Rao V.J (1988), ‘Survival time in gunshot and stab wound victims’, American Journal of Forensic Medicine and Pathology, Vol 9(3): 215-217
  • O’Callaghan P.T., Jones M.D., James D.S., Leadbeatter S., Holt C.A., Noakes L.D.M. (1999), ‘Dynamics of stab wounds: force required for penetration of various cadaveric human tissues’, Forensic Science International 104(2-3): 173-178
  • Ormstad K., Karlsson T., Enkler L., Law B., Rajs J. (1986), ‘Patterns in sharp force fatalities – a comprehensive forensic medical study’, Journal of Forensic Sciences Vol 31(2) pp.529-542
    Purdue B.N. (2000), ‘Cutting and piercing wounds’, Chapter 9 in Mason J.K. and Purdue B.N. (Ed), ‘The pathology of trauma’, 3rd Ed, Arnold
  • Thali MJ, Schwab CM, Tairi K, Dirnhofer R, Vock P (2002), ‘Forensic radiology with cross-section modalities: spiral CT evaluation of a knife wound to the aorta’, Journal of Forensic Sciences 47(5):1041-5
  • Thoresen S.O. and Rognum T.O. (1986), ‘Survival time and acting capability after fatal injury by sharp weapons’, Forensic Science International, Vol 31: 181-187

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