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Forensic Science, Medicine, and Pathology

, Volume 5, Issue 3, pp 204–209 | Cite as

Ballistics reviews: mechanisms of bullet wound trauma

  • Nicholas Maiden
Review

Abstract

The location of an entrance wound (bullet placement) and the projectile path are the most important factors in causing significant injury or death following a shooting. The head followed by the torso are the most vulnerable areas, with incapacitation resulting from central nervous system (brain or cord) disruption, or massive organ destruction with hemorrhage. Tissue and organ trauma result from the permanent wound cavity caused by direct destruction by the bullet, and also from radial stretching of surrounding tissues causing a temporary wound cavity. The extent of tissue damage is influenced by the type of bullet, its velocity and mass, as well as the physical characteristics of the tissues. The latter includes resistance to strain, physical dimensions of an organ, and the presence or absence of surrounding anatomical constraints. Bullet shape and construction will also affect tissue damage and bullets which display greater yaw will be associated with increased temporary cavitation. Military bullet designs do not include bullets that will expand or flatten as these cause greater wound trauma and are regulated by convention.

Keywords

Ballistics Bullet placement Temporary cavity Permanent cavity Tissue damage Bullet design Fragmentation Yaw Forensic Temporary cavitation Permanent cavitation Centre of mass 

References

  1. 1.
    Amato JJ, Rich NM. Temporary cavity effects in blood vessel injury by high velocity missiles. J Cardiovasc Surg. 1972;13:147–55.Google Scholar
  2. 2.
    Amato JJ, Billy LJ, Lawson NS, Rich NM. High velocity missile injury: an experimental study of the retentive forces of tissue. Am J Surg. 1974;127:454–9.PubMedCrossRefGoogle Scholar
  3. 3.
    Aviado DM. Reflexes from stretch receptors in blood vessels, heart and lungs. Physiol Rev. 1955;35:247–300.PubMedGoogle Scholar
  4. 4.
    Courtney A, Courtney M. Links between traumatic brain injury and ballistics pressure waves originating in the thoracic cavity and extremities. Brain Inj. 2007;21:657–62.PubMedCrossRefGoogle Scholar
  5. 5.
    Crucq JWB. Stochastic computer modeling of wound ballistics. Middelburg: Drukkerij Meulenberg; 1991.Google Scholar
  6. 6.
    Davis JH. Forensic pathology in firearms cases. Wound Ballistics Rev. 1998;3(4):7–12.Google Scholar
  7. 7.
    Di Maio VJM. Gunshot wounds practical aspects of firearms, ballistics, forensic techniques. New York, Amsterdam, Oxford: Elsevier; 1985.Google Scholar
  8. 8.
    Di Maio VJM. Gunshot wounds, practical aspects of firearms, ballistics and forensic techniques. 2nd ed. Florida: CRC Press; 1999.Google Scholar
  9. 9.
    Dutton G, Lyons T, Roach S, Dickinson J. A review of the wounding effects of the Colt AR-15 and FN FAL rifles used by Martin Bryant in the Port Arthur shooting incident April 26 1996, Tasmania, Australia. Wound Ballistics Rev. 1998;3(4):41–3.Google Scholar
  10. 10.
    Fackler ML. Handgun bullet performance. AFTE J. 1988;20(4):446–8.Google Scholar
  11. 11.
    Fackler ML. Wound ballistics: a review of common misconceptions. AFTE J. 1988;21(1):25–9.Google Scholar
  12. 12.
    Fackler ML. Wounding patterns of military rifle bullets. Int Def Rev. 1989;1:59–64.Google Scholar
  13. 13.
    Fackler ML, Peters CE. The shock wave myth (and comment). Wound Ballistics Rev. 1991;1:38–40.Google Scholar
  14. 14.
    Fackler ML. Police handgun selection. Wound Ballistics Rev. 1992;1(3):32–7.Google Scholar
  15. 15.
    Fackler ML. Gunshot wound review: wound ballistics and the scientific background. Ann Emerg Med. 1996;28:194–203.Google Scholar
  16. 16.
    Fackler ML. Incapacitation time, questions and comments. Wound Ballistics Rev. 1999;4(1):4–8.Google Scholar
  17. 17.
    Fackler ML. Wound ballistics research of the past twenty years: a giant step backwards. Wound Ballistics Rev. 2000;4(4):39–40.Google Scholar
  18. 18.
    Fackler ML, Brown AJ, Johnston D. Effect of distance of fire on deformation of the M16A2 M855 bullet in shots penetrating ordnance gelatin tissue simulant. AFTE J. 2000;4(3):27–9.Google Scholar
  19. 19.
    Fackler ML. What’s wrong with the wound ballistics literature and why. Wound Ballistics Rev. 2001;5(1):37–47.Google Scholar
  20. 20.
    Fackler ML. Wound profiles. Wound Ballistics Rev. 2001;5(2):25–38.Google Scholar
  21. 21.
    Haag LC. 5.56 × 45 mm SS109/M855 bullets: design, exterior and terminal ballistic performance. AFTE J. 2001;33(1):20–3.Google Scholar
  22. 22.
    Harvey EN, Korr IM, Oster G, McMillan JH. Secondary damage in wounding due to pressure changes accompanying the passage of high velocity missiles. Surgery. 1947;21:18–39.Google Scholar
  23. 23.
    Harvey EN. The mechanism of wounding by high velocity missiles. Proc Am Philos Soc. 1948;92(4):294–304.PubMedGoogle Scholar
  24. 24.
    Hatcher JS. Textbook of firearms investigation, identification and evidence. North Carolina: Small Arms Technical Publishing Company; 1935.Google Scholar
  25. 25.
    Hays Parks W, Fackler ML. Third international workshop on wound ballistics: Thun, Switzerland, March 28–29, 2001. Wound Ballistics Rev. 2001;5(2):17–20.Google Scholar
  26. 26.
    Hollerman JJ, Fackler ML, Coldwell DM, Ben-Menachem Y. Gunshot wounds: bullets, ballistics and mechanisms of injury. Am Roentgen Ray Soc. 1990;155:685–90.Google Scholar
  27. 27.
    Janzon B, Seeman T. Muscle devitalization in high energy missile wounds, and its dependence on energy transfer. J Trauma. 1985;25:138–44.Google Scholar
  28. 28.
    Janzon B. Material interactions: simulants. In: Cooper GJ, Dudley HAF, Gann DS, Little RA, Maynard RL, editors. Scientific foundations of trauma. Oxford: Butterworth Heinemann; 1997. p. 26–36.Google Scholar
  29. 29.
    Janzon B, Hull JB, Ryan JM. Projectile, material interactions: soft tissue and bone. In: Cooper GJ, Dudley HAF, Gann DS, Little RA, Maynard RL, editors. Scientific foundations of trauma. Oxford: Butterworth Heinemann; 1997. p. 37–52.Google Scholar
  30. 30.
    Jussila J. Wound ballistic simulation: assessment of the legitimacy of law enforcement firearms ammunition by means of wound ballistic simulation. Academic Dissertation, University of Helsinki; 2005.Google Scholar
  31. 31.
    Karger B. Penetrating gunshots to the head and lack of immediate incapacitation. Int J Legal Med. 1995;108:53–61.PubMedCrossRefGoogle Scholar
  32. 32.
    Kolsky H. The role of stress waves in penetration processes. In: Labile RC, editor. Ballistic materials and penetration mechanics. Elsevier: New York; 1980. p. 185–223.Google Scholar
  33. 33.
    Kumada M, Schmidt RM, Sagawa K, Tan KS. Carotid sinus reflex in response to hemorrhage. Am J Physiol. 1970;219:1373–9.PubMedGoogle Scholar
  34. 34.
    MacPherson D. Bullet penetration: modeling the dynamics and the incapacitation resulting from wound trauma. California: Ballistics Publications; 1994.Google Scholar
  35. 35.
    Moss GM. Projectiles: types and aerodynamics. In: Cooper GJ, Dudley HAF, Gann DS, Little RA, Maynard RL, editors. Scientific foundations of trauma. Oxford: Butterworth Heinemann; 1997. p. 12–25.Google Scholar
  36. 36.
    Newgard K. The physiological effects of handgun bullets: the mechanisms of wounding and incapacitation. Wound Ballistics Rev. 1992;1(3):12–7.Google Scholar
  37. 37.
    Patrick UW. Handgun wounding factors and effectiveness. Quantico, VA: FBI Firearms Training Unit; 1989.Google Scholar
  38. 38.
    Roberts GK. The wounding effect of 5.56 mm/.223 law enforcement general purpose shoulder fired carbines compared with 12 GA. Shotguns and pistol calibre weapons using 10% ordnance gelatine as a tissue simulant. Wound Ballistics Rev. 1998;3(4):16–28.Google Scholar
  39. 39.
    Ryan JM, Rich NM, Burris DG, Ochsner MG. Biophysics and pathophysiology of penetrating injury. In: Ryan JM, Rich NM, Dale RF, Morgans BT, Cooper GJ, editors. Ballistics trauma, clinical relevance in peace and war. London: Arnold; 1997. p. 31–46.Google Scholar
  40. 40.
    Sellier KG, Kneubuehl BP. Wound ballistics and the scientific background. Amsterdam: Elsevier; 1994.Google Scholar
  41. 41.
    Settles GS. High speed imaging of shack wave, explosions and gunshots. Am Sci. 2006;94:22–31.Google Scholar
  42. 42.
    Suneson A, Hansson H, Seeman T. Peripheral high energy missile hits cause pressure changes and damage to the nervous system: experimental studies on pigs. J Trauma-Inj Infect Crit Care. 1987;27:782–9.CrossRefGoogle Scholar
  43. 43.
    Suneson A, Hansson HA, Seeman T. Central and peripheral nervous damage following high energy missile wounds in the thigh. J Trauma. 1988;28(1 Suppl):197–203.Google Scholar
  44. 44.
    Wehner HD, Sellier K. Compound action potentials in the peripheral nerve induced by shock waves. Acta Chir Scand Suppl. 1982;508:179–84.PubMedGoogle Scholar
  45. 45.
    Westaby S, Blaisdell FW. Ballistic injury to the chest. In: Ryan JM, Rich NM, Dale RF, Morgans BT, Cooper GJ, editors. Ballistic trauma, clinical relevance in peace and war. London: Arnold; 1997. p. 193–206.Google Scholar
  46. 46.
    Yamada H. Strength of biological materials. Baltimore, Maryland: Williams & Wilkins Company; 1970.Google Scholar

Copyright information

© Humana Press 2009

Authors and Affiliations

  1. 1.Discipline of Pathology, Level 3 Medical School North BuildingThe University of AdelaideAdelaideAustralia

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