I copied the picture and following paragraph from a couple websites that describe the harness K has to wear.
The Pavlik Harness was first introduced by Arnold Pavlik, a Czech orthopedic surgeon, who first described it in the 1950’s. Since then, it has become standard treatment for hip dysplasia in infants. The harness consists of a shoulder harness attached to foot stirrups that keep the hips in the position of flexion and abduction, while allowing for a certain degree of movement within the "safe zone". This allows the femoral head (ball) to move within limits of safety within the acetabulum (cup), thus molding and deepening the acetabulum with growth. At birth, the harness is usually worn full-time for 6 weeks when the hip stabilizes, followed by another 6 weeks of weaning.