Abstract: An abduction device for treatment of dysplasia or congenital luxation of a femur hip in a newborn having a main body formed of a flexible material that has a front and rear edge portion spaced longitudinally, and a first and second side edge portion spaced laterally, the main body includes a plurality of sheaths which extend laterally between the side edge portions and in an intermediate area between the front and rear edge portions. Each of the sheaths has closed side boundaries, a closed lateral end boundary and an open lateral end. Slab members are received within the sheaths by insertion of a slab through an open end. The main body is received between the legs of the newborn, and the slabs are formed of a material that is sufficiently rigid to maintain the legs of the newborn separated to a desired extent. The open ends are arranged such that the slabs are accessible through the open ends for facilitating subsequent removal of the slabs following initial application of the device to the newborn.