Therapeutic management of developmental dysplasia Newborn to 6 months: The hip joint is maintained by splinting. The Pavlik harness is the most widely used, and with time, motion, and gravity, the hip works into a more abducted, reduced position. Worn continuously until the hip is proved stable. Approx. 6 to 12 weeks. When there is difficulty stabilizing the hip, a surgical closed reduction and application of spica cast may be performed