DOUBLE-STOPPED ANKLE-FOOT ORTHOSIS IN FLACCID PERONEAL AND TIBIAL PARALYSIS - EVALUATION OF FUNCTION

  • 1 January 1980
    • journal article
    • research article
    • Vol. 61  (11) , 536-541
Abstract
How effectively an ankle-foot orthosis can substitute for paralyzed musculature, and the stresses imposed on the orthosis, as a basis for future designs were studied. Timing of the events of gait, the ground reaction forces, their magnitude and location and the brace moments were studied. Midstance phase was found lengthened at the expense of push-off phase. During push-off, vertical loading and posterior shear were markedly reduced by tibial block. The dorsiflexion moment in the orthosis was correspondingly increased. The orthosis substituted for muscle function in that it approximates the foot-ankle motion of heel-strike and allows a push-off substitute.

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