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Changing sidestep cutting technique reduces knee valgus loading

Journal Article


Abstract


  • Background: Common lower limb postures have been found when noncontact anterior cruciate ligament (ACL) injuries occur during sidestep cutting tasks. These same postures have been linked to knee loadings known to stress the ACL.

    Hypothesis: Whole body technique modification would reduce knee loading.

    Study Design: Controlled laboratory study.

    Methods: Experienced team sport athletes were recruited for whole body sidestep cutting technique modification. Before and after a 6-week technique modification training, participants performed sidestep cutting tasks while ground-reaction force and motion data were collected. A kinematic and inverse dynamics model was used to calculate 3-dimensional knee loading during sidestep cutting.

    Results: At initial foot contact, the participants placed their stance foot closer to the bodyÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂs midline and held their torso more upright, in line with the aims of the technique modification training. This was accompanied by significantly lower peak valgus moments in the weight acceptance phase of stance. Both postural changes were correlated with the change in peak valgus moment.

    Conclusion: Whole body sidestep cutting technique modification resulted in reduced knee loading.

    Clinical Relevance: Implementation of whole body technique modification may produce effective ACL injury prevention programs in sports involving sidestep cutting.

Authors


  •   Dempsey, Alasdair R. (external author)
  •   Lloyd, David G. (external author)
  •   Elliott, Bruce C. (external author)
  •   Steele, Julie R.
  •   Munro, Bridget J. (external author)

Publication Date


  • 2009

Citation


  • Dempsey, A. R., Lloyd, D. G., Elliott, B. C., Steele, J. R. & Munro, B. J. (2009). Changing sidestep cutting technique reduces knee valgus loading. American Journal of Sports Medicine, 37 (11), 2194-2200.

Scopus Eid


  • 2-s2.0-70649085787

Ro Metadata Url


  • http://ro.uow.edu.au/hbspapers/3313

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 2194

End Page


  • 2200

Volume


  • 37

Issue


  • 11

Abstract


  • Background: Common lower limb postures have been found when noncontact anterior cruciate ligament (ACL) injuries occur during sidestep cutting tasks. These same postures have been linked to knee loadings known to stress the ACL.

    Hypothesis: Whole body technique modification would reduce knee loading.

    Study Design: Controlled laboratory study.

    Methods: Experienced team sport athletes were recruited for whole body sidestep cutting technique modification. Before and after a 6-week technique modification training, participants performed sidestep cutting tasks while ground-reaction force and motion data were collected. A kinematic and inverse dynamics model was used to calculate 3-dimensional knee loading during sidestep cutting.

    Results: At initial foot contact, the participants placed their stance foot closer to the bodyÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂs midline and held their torso more upright, in line with the aims of the technique modification training. This was accompanied by significantly lower peak valgus moments in the weight acceptance phase of stance. Both postural changes were correlated with the change in peak valgus moment.

    Conclusion: Whole body sidestep cutting technique modification resulted in reduced knee loading.

    Clinical Relevance: Implementation of whole body technique modification may produce effective ACL injury prevention programs in sports involving sidestep cutting.

Authors


  •   Dempsey, Alasdair R. (external author)
  •   Lloyd, David G. (external author)
  •   Elliott, Bruce C. (external author)
  •   Steele, Julie R.
  •   Munro, Bridget J. (external author)

Publication Date


  • 2009

Citation


  • Dempsey, A. R., Lloyd, D. G., Elliott, B. C., Steele, J. R. & Munro, B. J. (2009). Changing sidestep cutting technique reduces knee valgus loading. American Journal of Sports Medicine, 37 (11), 2194-2200.

Scopus Eid


  • 2-s2.0-70649085787

Ro Metadata Url


  • http://ro.uow.edu.au/hbspapers/3313

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 2194

End Page


  • 2200

Volume


  • 37

Issue


  • 11