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bi-articular arm muscle length changes with wrist and elbow motion

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  • bi-articular arm muscle length changes with wrist and elbow motion

    We are doing some work to investigate the contribution of muscle
    spindles to kinaesthesia in bi-articular muscles and am interested in
    muscle length changes with various and simultaneous elbow and wrist
    movements. I would like to provide an example of length changes in
    either the musculotendinous unit/muscle/fibre/sarcomere, over a range
    of elbow and wrist angles, for flexor carpi radialis perhaps.
    Therefore, I am looking for some normative (or any) data on origin
    and insertion coordinates for flexor carpi radialis (or other
    bi-articular muscle crossing the elbow and wrist), relative to the
    approximate elbow and wrist flexion/extension axes... OR... the
    muscle/fibre/sarcomere length changes over various degrees of elbow
    and wrist flexion/extension angles, should that information be out
    there somewhere???

    thanks in advance,

    Daina Sturnieks, PhD

    Prince of Wales
    Medical Research Institute
    Barker Street, Randwick, Sydney
    NSW 2031 AUSTRALIA

    telephone: +61 2 9399 1062
    facsimile: +61 2 9399 1005

    http://www.powmri.edu.au/FBRG
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