BARNES, Andrew, WHEAT, Jonathan and MILNER, Clare E. (2008). Dynamic foot mobility in high and low arched individuals. In: North America Congress of Biomechanics.
Abstract
Evidence relating injury to any one foot type
is limited (Kaufman et al. 1999). However, a
higher incidence of shock-related bony
injuries have been reported in high arched
(HA) runners (Williams et al. 2001a). This
incidence may be linked to the higher
observed loading rates in this population
(Williams et al. 2001b). During early stance
the foot pronates, a tri-planar motion
consisting of dorsiflexion, eversion and
abduction. Pronation has been suggested to
serve as a shock attenuation mechanism.
Perry and Lafortune (1995) reported increased
impact loading when normal pronation was
restricted. Given this, one may expect the
range of motion within the joints of the foot
to be crucial in determining its shock
attenuation ability. The purpose of this study
was to compare the relative foot mobility and
tibial shock in those with HA and those with
low arches (LA). More specifically, it sought
to test the hypothesis that those with LA have
more mobile feet and are better able to absorb
shock dynamically than more rigid HA feet. It
is suggested that those with greater range of
motion at the joints of the foot (LA) will have
lower tibial shock compared to those with
more rigid feet (HA).
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