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Shoe modifier gait foot orthoses designed as a permanent modification of a shoe by attaching a wedge either internally or externally as a permanent modification of a shoe. These devices improve the user\'s gaiting capabilities by correcting flexible deformities of the foot. These orthoses may consist of prefabricated or custom-made wedges, whose shape and characteristics (e.g., material) depend on the patient\'s deformity and/or the gaiting characteristic to be improved. External wedges include flexible (e.g., rubber) orthoses inserted into the heel to absorb impact and median and lateral wedges intended to promote inversion and eversion respectively. Internal wedges include medial heel wedges that can rotate the hindfoot into inversion and lateral heel wedges used for eversion of the hindfoot to reduce pressure.
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