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Christopher.johnston@ah.slu.se
01-30-1995, 09:06 PM
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