In a normal hip joint, the top (head) of the thighbone (femur) fits snugly into the hip socket. In a child with DDH, the hip socket is shallow. As a result, the head of the femur may slip in and out.

A number of prescription and over-the-counter drugs help relieve the pain, swelling and other symptoms that come with fractured bones, injured ligaments, disease, aging and degeneration of joints and bones. Managing pain is important for...