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Functional total lower/upper-limb orthoses using power (usually electric) sources and powered mechanisms that are designed to make possible and/or improve the functional activities (e.g., gaiting) of the lower and upper limbs by providing support, supplementing, and/or augmenting the limb\'s functions and/or modifying its structure. 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 and upper limbs. Dedicated powered orthoses controlled by bioelectric muscular (i.e., myoelectric) and/or central nerve (neuroelectric) signals, and/or user operated switches (i.e., autonomous) are available. Powered lower/upper-limb orthoses are mainly used to make functions such as grasping and gait possible.
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