Developmental hip dislocation DDH is a general term that includes all hip dysplasia in congenital, neonatal and due to young children. In this video, Prof. Wanlin Liu from the Department of Pediatric Orthopedics of the Second Affiliated Hospital of Inner Mongolia Medical University discusses the early treatment of DDH. Early treatment of DDH is based on relative age division as a general guideline, in which 0 to 6 months is treated with Palik retainer, 6 to 18 months with cast or functional brace, and 18 to 36 months with surgery.