B is a bottom plan view of the molding blank of FIG. 5A positioned on a model of a leg prior to casting an orthosis. [0026]FIG. 5C is a perspective view of a molding plank positioned within a partially completed orthosis made in accordance with the invention. [0027]FIG. 5D is a posterior elevational view of a partially completed orthosis constructed in accordance with the invention. [0028]FIG. 5E