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[Incidence of congenital hip dislocation in 40,243 live births (II)].

We study 1,747 children who presented luxating hip disease evaluating the following parameters: a) Frequency of breach presentation. b) Weight at birth. c) Inheritance. It was observed that out of 1,747 children affected, 159 were by breach presentation, representing 9.10%. With regard to weight, it seems that under-weight babies are more affected than those of average weight. Lastly, we observed greater incidence in patients with a family history of hip dysplasia.