fter successful Pavlik harness, closed reduction and casting, or open reductionand casting treatment of developmental dysplasia of the hip (DDH) in the 6-month-oldto 2-year-old child, happiness reigns. Following harness or cast is removed, what happensnext? Should one use some sor t of fixed abduction device for a period of time? If so,for how long? Full time or part time? Wean or not? What clinical and imaging guidelinesshould be used?The use of such devices varies markedly. No significant studies are available forconsultation. These orthoses’ alleged value is based on the concept of acetabularnormalization from the stimulus of the docked femoral head and elimination of any minorresidual instability. It seems like a logical principle, but no long-term, controlled data areavailable to document their effectiveness in contrast to normalization that occurs with timeand growth alone after reduction.