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Toe Clearance in Stair Ascent Measurement Methods

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  • Toe Clearance in Stair Ascent Measurement Methods

    I am looking for information on measuring toe clearance during stair
    ascent in human subjects without attaching a marker on the toe.
    Right now, I have two markers on the edge of a stair to draw a line
    between them that represents the edge of the stair. Then the subject has
    a marker on the most anterior part of the foot as they walk up the stairs.
    Since toe clearance during stair ascent can be in the centimeter range, I
    am looking for a more accurate method.
    I remember reading about a method that draws a vector from the lateral
    ankle malleolus to the second metacarpal of the toe and a vector from the
    medial ankle malleolus to the first metacarpal of the toe. And where
    these vectors intersect is the most anterior part of the foot. I don't
    know what article it was in or even who wrote it, but does anyone know
    what I am referring to? If there are other method out there, please let
    me know.

    Thanks,
    Jennifer Manz
    Research Assistant
    Bioengineering Department
    University of Pittsburgh
    Pittsburgh Pennsylvania
    jlm176@pitt.edu
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