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Powered orthoses designed for external modification of the structural and/or functional characteristics of the complete lower and upper limbs using power sources (usually electric) and powered mechanisms that respond to the user\'s switching actions (i.e., autonomous). These devices provide support, supplement, and/or augment the limb functions and/or its structure. These orthoses typically consist of dynamic wearable devices that include a control unit, an actuator, power sources, motors, and a variety of mechanisms appropriate to facilitate the normal function of otherwise disabled lower and upper limbs. Autonomous powered lower-/upper-limb orthoses are mainly used to make functions such as grasping and gait possible.
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