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Functional total lower-limb orthoses using power sources (usually electric) and powered mechanisms that are designed to make possible and/or improve the functional activities (i.e., gait) of the lower limbs. These devices provide support, supplement, and/or augment the limb functions. These orthoses typically consist of dynamic wearable devices that include sensors, power sources, motors, and a variety of mechanisms appropriate to facilitate the normal function of otherwise partially or totally disabled lower limbs. Also available are dedicated powered lower-limb orthoses controlled by bioelectric muscular (i.e., myoelectric) and/or central nerve (neuroelectric) signals, and/or user operated switches (i.e., autonomous). Powered lower-limb orthoses are mainly used to make gait possible.
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