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foot absolute angles

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  • foot absolute angles

    Hi Everyone

    My question pertains to the computation of absolute foot angles.

    I have been using an embedded coordinate system and a yxz rotation sequence
    (dp/pf,inv/ev, int/ext rot) in the foot to compute the three absolute
    rotations needed for inverse dynamics. I am finding that across children, my
    algorithms are not performing very well - the problems include singularities,
    noise and abnormally large ROM for some of the data.

    I am looking for a robust method of calculating foot absolute angles,
    preferably using an embedded coordinate system. Can anyone suggest some
    references which may help in this matter. I am also interested in knowing the
    various methods used by others to compute inversion/eversion if embedded
    coordinate systems are not used.

    Thanks in advance
    I will post all responses
    Vicky Chester

    Vicky Chester
    Ph.D Candidate
    Institute of Biomedical Engineering
    University of New Brunswick
    Fredericton, NB
    E3B 5A3

    PH: 506-453-4966
    Fax: 506-453-4827

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