[The effect of breach presentation on the development of the hips].

Authors examined, using sonographic methods in 100 children with breech-presentation, which of the intrauterine postures means a major danger in the development of hip dysplasia. It was found that acetabular alterations, requiring therapy or not, develop more frequently in groups in which the hips were in total flexion, the knees in semiflexion and the lower extremities in major external rotation. Based on their results they state that not the simple breech position is the greatest danger in the development of dysplasia and dislocation in babies born with breech presentation.