C25177 Genitalia Genitalia The external sex organs. The external sex organs. (NCI) C32221 Body Part C90259 Pediatric Terminology C84641 Clubfoot Talipes Club Foot|Clubfoot|Talipes Equinovarus The most common congenital deformation of the foot, occurring in 1 of 1,000 live births. The most common form is talipes equinovarus, where the deformed foot is turned downward and inward sharply. A congenital malformation involving one or both feet, in which the affected foot is rotated inward and downward. C84978 Osteochondrodysplasia C90259 Pediatric Terminology