Fractures of the hip in children and adolescents.

Hip fractures account for fewer than 1% of all fractures in children, and many can be successfully treated nonoperatively. Transepiphyseal, transcervical, and displaced cervicotrochanteric fractures, however, generally require closed reduction or open reduction and internal fixation to avoid complications of coxa vara deformity and nonunion. Avascular necrosis appears to be related to the severity of the initial injury and unaffected by treatment.