[Traumatic hip dislocation in children. Case report of a 4 year-old girl].

Traumatic hip dislocation with a history of high energy trauma is infrequent in children. The incidence rate in our country has not been determined in the literature. Everything depends on the patient's age group, the type of trauma and the ligament laxity of children. We report herein the case of a 4 year-old girl with this condition and a history of high energy trauma. She was seen at Aragón Pediatric Hospital, SSDF, 8 hours after the injury and received conservative treatment. She has done well so far and has been followed-up monthly for 18 months, without complications. Avascular necrosis of the femoral head is the most frequent complication and has irreversible sequelae. After the follow-up period the patient is totally functional and independent.