US Patent 7513880 Ankle-foot orthosis having an orthotic footplate

An ankle-foot orthosis including a footplate having a line of progression that extends from a heel portion to a middle portion to a toe portion of the footplate, and a leg support connected to the footplate. The footplate has at least two superimposed and discrete structural layers each having a different length and extending along at least a segment of a length of the footplate. The footplate defines regions with different thicknesses and stiffness. The leg support has a first end portion connected to the heel portion of the footplate.