Dan Med J. Jun;59(6):B Assessment of adult hip dysplasia and the outcome of surgical treatment. Troelsen A(1). Author information: (1)Department of. Oct 17, - Babies diagnosed early can usually wear a soft brace that holds the ball of the joint in the socket for a few months to help mold it into the proper shape. A baby older than 6 months may need a full-body cast or surgical intervention. Surgery is usually the only treatment for older children and adults.