Approximately 1.5 out of every 1,000 babies will be affected with congenital hip dislocation, which is commonly referred to as hip dysplasia. This usually happens when the ball joint at the top of the leg is not in the correct location in the hip joint. Research shows that the left hip is more likely to be dislocated than the right hip, but some children will be affected on both sides. A doctor will diagnose congenital hip dislocation after birth through physical examinations and x-rays, if necessary. If the condition is not noticed at birth, it should be detected during one of the many well-checks that a baby receives in their first year of life. Although there is no known cause, low amniotic fluid and a breech delivery can increase the chances for developing hip dislocation. While there may be no symptoms present, some babies that are affected have one leg that is shorter than the other, which will cause a limited amount of movement on the affected side. Other symptoms may include leg positions that do not appear to be even, uneven folds of fat on the thighs and an outward appearance in the affected leg. Treatment options include a device that helps to keep the legs apart (which will hold in the hip joint steady), casts, braces or surgery. It is important to get early treatment so that arthritis and hip deterioration do not occur.