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Injuries and loading discussion II

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  • Injuries and loading discussion II

    Dear Biomech:ers

    Additional contributions to the discussion which I regrettably ommitted in
    my first message. Please excuse this oversight. This interesting comment
    is from Peter A. Torzilli (TORZILLI@CONDYLE.MAE.CORNELL.EDU).


    >We have been doing some impact loading of articular cartilage. A single
    >impact will cause metabolic changes in PG production, ie, servere
    >decreases. Also, about about 20 MPa, tissue water content increases
    >and there appears to be permanent collagen damage. Whether loading
    >rate has an effect is still under investigation. Certainly a single
    >high stress will cause damage. Repetitive loading is another question,
    >which probably depends more on metabolism, ie, catabolism.

    And from J. Hale (jeh7a@galen.med.virginia.edu) the newly published article
    Journal of Biomechanics (J Bio 28(2):159-166, 1995). The article correlates
    chronic stress overload to patients with degenerative joint disease in the
    hip joint. The article also contains some references to other wok in this area.

    And from JIM PATTON(pattn@MERLE.ACNS.NWU.EDU) the reference McKinley and
    Peddotti, (1992) "Motor strategies in landing from a jump: the role of
    skill in task execution," Exp Brain Res, 90:427-440.
    I do not have this article yet but am looking forward to read it.

    From

    Chris Johnston, DVM
    Equine Biomechanics Lab.
    School of Veterinary Medicine
    Uppsala, Sweden
    Christopher.Johnston@ah.slu.s
    Chris Johnston, DVM
    Equine Biomechanics Lab.
    School of Veterinary Medicine
    Uppsala, Sweden
    Christopher.Johnston@ah.slu.se
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