Abstract: An arch brace orthotic includes an adjustable arch curve having a plurality of extensions separated by incisions which separate the arch curve surface into multiple resiliently cantilevered extensions. The extensions adjust the arch curve height and slopes during each foot-strike along the arch curve. The weighted arch curve height is returned to an unweighted height by flexibly rebounding of each extension to support the arch of the user's foot. A tensioning means is connectable under the arch brace, providing adjustment of the arch curve height and slope to therapeutically support the user's arch. The arch brace is movable without disassembly between any shoe for treatment of arch and foot disorders. A method of treating plantar fasciitis and related foot disorders includes selectively and periodically adjusting the arch curve height and slopes by manipulating the tensioning means for therapeutic support and user controlled strengthening of the user's arch and foot.

Abstract: An orthotic arch support including an intrinsically self-adjusting medial longitudinal arch curve including a plurality of generally adjacent incisions being generally transverse across the medial longitudinal arch curve. The incisions originate at a medial side of the arch curve, thereby separating the curved arching surface into a plurality of resilient extensions. The plurality of extensions are compressed against each other and self-adjust the arch curve height and slopes during each step. As weight shifts onto the posterior slope, the height of the arch curve is decreased by limited compression of each extension against adjacent extensions during each stride. Each resilient extension flexibly rebounds to return the arch curve to an unweighted height when weight shifts off of the arch curve. A tensioning means is insertable underneath the extensions to adjust the height and slopes of the arch curve, providing for user adjustment of the arch curve height and slopes as foot pain is reduced during use.