Head Injury Biomechanics

  • Jorge A. C. Ambrosio
Conference paper
Part of the International Centre for Mechanical Sciences book series (CISM, volume 423)


Impact to the head causes translational and rotational acceleration of the skull that sets up differential motion with the brain. This causes strain in neural tissues and at points of tethering. With a severe enough impact, the relative brain motion can also tear bridging veins at the cortex, lacerate the base of the brain and contuse brain tissue adjacent to internal membranes and tethering points. Brain function can be damaged by diffuse axonal injury, related to high strain and strain-rate deformation of neural tissue. The Head Injury Criterion (HIC) assesses injury risks from translational acceleration. It is proportional to ∫a2.5 dt, where a is the resultant head acceleration. HIC = 1000 represents a 16% risk of serious brain injury. Limits are also proposed for peak 3 ms translational acceleration, rotational velocity and rotational acceleration of the head. Various mechanical and mathematical tools are used as human surrogates to simulate impact events and assess injury risks.


Angular Acceleration Head Impact Rotational Acceleration Diffuse Axonal Injury Head Acceleration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. [23.1]
    Gennarelli, T.A., Head injuries in man and experimental animals: Clinical aspects, Acta neurochirurgica Suppl. 32, 1–13, 1983.CrossRefGoogle Scholar
  2. [23.2]
    Strich, S.J., Shearing of nerve fibers as a cause of brain damage due to head injury, The Lancet, 2, 443–448, 1961.CrossRefGoogle Scholar
  3. [23.3]
    Lighthall, J.W., Goshgarian, H.G. and Pinderski, C.R., Characterization of axonal injury produced by controlled cortical impact, J. Neurotrauma, 7 (2), 65–76, 1990.CrossRefGoogle Scholar
  4. [23.4]
    Gutierrez, E., Huang, Y., Haglid, K., Feng, B., Hansson, H.A., Hamberger A. and Viano, D.C., A new model for diffuse brain injury by rotational acceleration: I model, gross appearance and astrocytosis, Journal of Neurotrauma, (in print), 2000.Google Scholar
  5. [23.5]
    Adams, J.H., Doyle, D., Graham, D.I., Lawrence, A.E. and McLellan, D.R., Gliding contusions in nonmissile head injury in humans, Arch. Pathol. Lab. Med., 110, 485–488, 1986.Google Scholar
  6. [23.6]
    King, A.I. and Viano, D.C., Mechanics of head and neck, Chapter 25, in The Biomedical Engineering Handbook, J. D. Bronzino Ed., CRC Press, Inc. and IEEE Press, Boca Raton, FL, 357–368, 1995.Google Scholar
  7. [23.7]
    Walker, L.B.Jr., Harris, E.H. and Pontius, U.R., Mass, volume, center of mass, and mass moment of inertia of head and neck of human body, Proceedings of the 17th Stapp Car Crash Conference, 525–537, 1973.Google Scholar
  8. [23.8]
    Hodgson, V.R. and Thomas, L.M., Comparison of head acceleration injury indices in cadaver skull fracture, Proceedings of the 15th Stapp Car Crash Conference, 190–206, 1971.Google Scholar
  9. [23.9]
    Hubbard, R.P. and McLeod, D.G., Definition and development of a crash dummy head Proceedings of the 18th Stapp Car Crash Conference, 599–628, 1974.Google Scholar
  10. [23.10]
    Reynolds, H.M., Clauser, C.E., McConville, J., Chandler, R. and Young, J.W., Mass distribution properties of the male cadaver, SAE Paper No. 750424, Society of Automotive Engineers, Warrendale, PA, 1975.Google Scholar
  11. [23.11]
    Beier, G., Schuller, E., Schuck, M., Ewing, C., Becker, E. and Thomas, D., Center of gravity and moments of inertia of human head, Proceedings of the 5th International Conference on the Biokinetics of Impacts, 218–228, 1980.Google Scholar
  12. [23.12]
    Hodgson, V.R. and Thomas, L.M., Head impact response, Vehicle Research Inst., Soc. Automotive Engrs., Warrendale, PA, 1975.Google Scholar
  13. [23.13]
    Padgaonkar, A.J., Krieger, K.W. and King, A.I., Measurement of angular acceleration of a rigid body using linear accelerometers, J Appl. Mech., 42, 552–556, 1975.CrossRefGoogle Scholar
  14. [23.14]
    Lissner, H.R., Lebow, M. and Evans, F.G., Experimental studies on the relation between acceleration and intracranial pressure changes in man, Surg. Gynecol. Obstet., 111, 329–338, 1960.Google Scholar
  15. [23.15]
    Patrick, L.M., Kroell, C.K. and Mertz, H.J., Forces on the human body in simulated crashes, Proceedings of the 9th Stapp Car Crash Conference, SAE, 237–260, Society of Automotive Engineers, Warrendale, PA, 1965.Google Scholar
  16. [23.16]
    Gadd, C.W., Criteria for injury potential, In Impact Acceleration Stress Symposium, Nat. Res. Council Publication No. 977, Nat. Acad. Sci., Washington, DC, 141–144, 1961.Google Scholar
  17. [23.17]
    Patrick, L.M., Lissner, H.R. and Gurdjian, E.S., Survival by design–Head protection, Proceedings of the 7th Stapp Car Crash Conference, 483–499, 1965.Google Scholar
  18. [23.18]
    Versace, J., A review of the severity index, Proceedings of the 15th Stapp Car Crash Conference, 771–796, 1970.Google Scholar
  19. [23.19]
    Prasad, P. and Mertz, H.J., The position of the United States delegation to the ISO working group 6 on the use of HIC in the automotive environment, SAE Paper No. 851246. Soc. of Automotive Engrs., Warrendale, PA, 1985.Google Scholar
  20. [23.20]
    Ommaya, A.K., Biomechanics of head injury, In The Biomechanics of Trauma, A.M. Nahum and J.W. Melvin Eds, Appleton-Century-Crofts, Norwalk, 1984.Google Scholar
  21. [23.21]
    Lowenhielm, P., Mathematical simulation of gliding contusions, Journal of Biomechanics, 8, 351–356, 1975.CrossRefGoogle Scholar
  22. [23.22]
    Margulies, S.S., Thibault, L.E. and Gennarelli, T.A., Physical model simulation of brain injury in the primate, Journal of Biomechanics, 23, 823–836, 1990.CrossRefGoogle Scholar
  23. [23.23]
    lvarsson, J., Viano, D.C., Lovsund, P. and Aldman, B., Strain relief from the cerebral ventricles during rotational acceleration of the head–an experimental study with physical models, Journal of Biomechanics, 33, 181–189, 2000.CrossRefGoogle Scholar
  24. [23.24]
    Holbourn, A.H.S., Mechanics of head injury, The Lancet, 2, 438–441, 1943.CrossRefGoogle Scholar
  25. [23.25]
    King, A.I. and Chou, C.C., Mathematical modeling, simulation and experimental testing of biomechanical systems crash response, Journal of Biomechanics, 9, 301–317, 1976.CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Wien 2001

Authors and Affiliations

  • Jorge A. C. Ambrosio
    • 1
  1. 1.Instituto Superior TécnicoPortugal

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