Prenatal ultrasonographic diagnosis of posteromedial bowing of the leg: two case reports

Congenital posteromedial bowing of the leg was prenatally detected in two p regnancies, at 20 and 31 weeks of gestation. Posteromedial bowing is a. rar e anomaly of unknown etiology. The prenatal course, monitored by ultrasonog raphy and the postnatal clinical and radiographic outcomes are discussed an d shout a complex differential diagnosis. The initial postnatal therapy is conservative. Leg length discrepancy can eventually be treated by lengtheni ng or epiphysiodesis on the contralateral side.