Pilot Study of Cadence, a Novel Shoe for Patients with Foot Drop
Abstract—Foot Drop is a mobility disorder that limits ankle
dorsiflexion, complicating the swing phase of gait and balance.
It is a common result of a neurological injury or disease such
as stroke, cerebral palsy or multiple sclerosis. Here we present
Cadence, a low-cost assistive shoe designed to passively improve
the biomechanics and rhythmicity of gait for people with foot
drop. The shoe reduces the magnitude of scuffing forces when
dragging the foot forward across the ground by using regions
of low-friction material that can retract into the shoe to restore
friction during stance phase. We report the results from a
pilot study of Cadence, which show the biomechanical and
performance effects of the device for five adults with foot drop
due to neurological disorder. In 3 of the 5 subjects, we found
that the shoe immediately improved gait mechanics, speed over
ground, and qualitative gait comfort.
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