Congenital convex pes valgus.

Congenital convex pes valgus is a rigid flatfoot deformity that may or may not be symptomatic. The authors describe the anatomical, clinical, and radiographic appearance and various methods of treatment. It may be asymptomatic in children, but early detection is important because delay in reduction can adversely affect results. Failure to diagnose and treat properly may lead to disabling deformity.