The Influence of Medial and Lateral Placement of Orthotic Wedges on Loading of the Plantar Aponeurosis. An in Vitro Study*

Abstract

A wedge under the lateral aspect of the forefoot transmits loads through the lateral support structures of the foot, locking the calcaneocuboid joint and decreasing strain in the plantar aponeurosis. A wedge under the medial aspect of the forefoot transmits loads through the medial support structures of the foot, which produces a truss-like action that increases strain in the plantar aponeurosis.