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Dear Biomech:ers,
I am looking for information concerning principle mechanisms of injury due
to chronic loading. The specific information I wish is a cause-effect
relationship between a type of loading and an injury type.
For example, articular joint injuries are often associated with impact or
impulsive loading and/or joint oscillation, yet maximal moments at a joint
may not occur until some time later on. A question that arises concerns
whether the injury causing factor is loading and/or loading rate as well as
if one dimensional loading is sufficient to cause mechanically induced joint
pathologies or must it occur in more then one dimension to induce changes?
Another example is injury to ligaments and perhaps tendons and strain rate.
Often mentioned in ligament- injury mechanisms is the relationship of strain
rate and location of injury Can high strain rate injuries occur in the
linear segment of a typical force-displacement curve, that is to say is
there a differential length change of a ligament as related to loading rates
or can they only occur at or near the maximal length of a ligament? Does
this occur in tendons?
If there is interest in this topic I can consolidate the responses in a
summary at a later date.
Many thanks,
Chris Johnston, DVM
Equine Biomechanics Lab.
School of Veterinary Medicine
Uppsala, Sweden
Christopher.Johnston@ah.slu.se
Chris Johnston, DVM
Equine Biomechanics Lab.
School of Veterinary Medicine
Uppsala, Sweden
Christopher.Johnston@ah.slu.se
I am looking for information concerning principle mechanisms of injury due
to chronic loading. The specific information I wish is a cause-effect
relationship between a type of loading and an injury type.
For example, articular joint injuries are often associated with impact or
impulsive loading and/or joint oscillation, yet maximal moments at a joint
may not occur until some time later on. A question that arises concerns
whether the injury causing factor is loading and/or loading rate as well as
if one dimensional loading is sufficient to cause mechanically induced joint
pathologies or must it occur in more then one dimension to induce changes?
Another example is injury to ligaments and perhaps tendons and strain rate.
Often mentioned in ligament- injury mechanisms is the relationship of strain
rate and location of injury Can high strain rate injuries occur in the
linear segment of a typical force-displacement curve, that is to say is
there a differential length change of a ligament as related to loading rates
or can they only occur at or near the maximal length of a ligament? Does
this occur in tendons?
If there is interest in this topic I can consolidate the responses in a
summary at a later date.
Many thanks,
Chris Johnston, DVM
Equine Biomechanics Lab.
School of Veterinary Medicine
Uppsala, Sweden
Christopher.Johnston@ah.slu.se
Chris Johnston, DVM
Equine Biomechanics Lab.
School of Veterinary Medicine
Uppsala, Sweden
Christopher.Johnston@ah.slu.se