Incidence of congenital clubfoot in Sweden. 128 cases in 138,000 infants 1946-1990 in Malmö.

The incidence of congenital clubfoot, neurological disorders excluded, was studied over a period of 45 years (1946-1990). The number of children, born alive with clubfoot, and detailed census data for the period were available. Altogether 137,614 living infants were born and of these 128 had congenital clubfoot. 56 (44 percent) were bilateral and 101 (79 percent) were boys. The overall incidence was 0.93 per thousand children. The annual incidence rose during the 45-year-period. This was, however, fully explained by the higher incidence among children of non-Nordic extraction.