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  • Changing Sidestep Cutting Technique Reduces Knee Valgus Loading

    Author(s)
    Dempsey, Alasdair R
    Lloyd, David G
    Elliott, Bruce C
    Steele, Julie R
    Munro, Bridget J
    Griffith University Author(s)
    Lloyd, David
    Dempsey, Alasdair R.
    Year published
    2009
    Metadata
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    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 ...
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    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 body's 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.
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    Journal Title
    American Journal of Sports Medicine
    Volume
    37
    Issue
    11
    DOI
    https://doi.org/10.1177/0363546509334373
    Subject
    Sports Medicine
    Biomechanics
    Biomedical Engineering
    Mechanical Engineering
    Human Movement and Sports Sciences
    Publication URI
    http://hdl.handle.net/10072/40280.1
    Collection
    • Journal articles

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