Background: Delayed diagnosis and improper treated cases of developmental dysplasia of the hip (DDH) in presence of excessive anteversion of femoral head may lead to undesirable consequences including more extensive interventions with severe complications and functional disability. This study aimed to compare the clinical, radiological and complication outcomes of simultaneously versus two stage surgical procedures (open reduction and proximal femoral derotation osteotomy) in the treatment of DDH with excessive femoral anteversion among sample of Iraqi children aged less than three years old. Methods: A total of 26 DDH cases were treated in two groups (GI, GII) at Al-Wasity Hospital (Baghdad, Iraq) from January 2014 to March 2015. GI (15...