Pes cavus: treatment by naviculo-cuboid osteotomy.

The treatment of pes cavus in the adult by the V osteotomy of Japas has several advantages if performed before the onset of secondary arthritic degeneration. The correction is carried out at the apex of the cavus and is technically simple. Consolidation is rapid, and correction is achieved with no significant sacrifice of movement. The authors describe a modification of the medial part of the osteotomy line which was devised because of the difficulty of controlling the various fragments of navicular and cuboid during reduction in the original technique, as well as a significant incidence of osteonecrosis in some of these fragments. This modification involves only the naviculo-cuboid joint and spares the other joints, thus reducing postoperative articular stiffness to a minimum.