View Full Version : foot absolute angles

08-01-2002, 05:28 AM
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
Email: vchester@unb.ca

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