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muscles for neck flexion

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  • muscles for neck flexion

    We are in the process of developing an anatomically based computer model of
    the human head-neck musculoskeletal system. Based on the musculoskeletal
    geometry in the model, the muscles commonly considered to be flexors of the
    head and neck (sternocleidomastoid and longus capitis and colli) have very
    small moment arms and are incapable of generating the moments measured in
    vivo. [Studies of human isometric neck strength have shown that
    individuals can generate from 6 to 12 Nm with the head in the neutral
    position (Moroney et al., 1988, Berg et al., 1994)]. It is unclear whether
    other neck muscles with moment arms appropriate for flexion (i.e.,
    infrahyoid muscles, platysma) actively play a role in head and neck
    flexion. We would like invite discussion about which neck muscles are
    responsible for flexion. Any reference to electromyographic or modelling
    studies is welcome.

    I will summarize and post all responses.

    Thank you,
    Anita Vasavada

    ************************************************** ****************************
    Anita Vasavada
    Sensory Motor Performance Program Biomedical
    Engineering
    Rehabilitation Institute of Chicago Northwestern University
    Chicago, IL 60611
    (312) 908-2696
    anitav@merle.acns.nwu.edu
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