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[187] Citation: Abstract
Our goal was to develop a powered othosis for the lower limb that could
comfortably
provide external torque during human walking. We constructued the orthosis
from a carbon fiber shell with hinge joint and two artificial pneumatic
muscles. One artificial pneumatic muscle provided plantar flexion torque
and one artificial pneumatic muscle provided dorsiflexion torque. We
collected joint kinematic and artificial muscle force data as one healthy
subject walked with the orthosis using proportial myoelectric control.
Peak plantar flexor torque provided by the orthosis was 70Nm and peak
dorsiflexor torque provided by the orthosis was 38Nm. Soleus and tibialis
anterior EMG amplitudes changed in response to powered orthosis assistance.
Future studies could use similar powered orthoses to study biomechanics and
motor adaptation during human walking or to assist gait rehabilitiation after
neurological injury.
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Updated: Tue Jul 15 23:54:51 2008
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