Haberg O, Foss OA, Lian OB, et al. - This study was undertaken to investigate whether the congenital foot deformity is a risk factor for developmental dysplasia of the hip (DDH). Sixty-thousands eight-hundred forty-four children were born in Sor-Trondelag county in Norway between 1996 and 2012. This cohort study explored children with risk factors for DDH using ultrasound. The data exhibited that children with a congenital foot deformity had a significantly increased risk for DDH in comparison with the general population and thus we regard foot deformity as a true risk factor for DDH.