Many parents are concerned about the problem of heredity. The cause of congenital hip dysplasia is related to heredity, but it is not dominant or recessive like other genetic diseases, and must be passed to the next generation. However, children with a family history of the disease, such as older brothers and sisters who have a history of joint dislocation, are 7-8 times more likely to have the disease than normal, or even more. Children with a family history of congenital hip dysplasia should be screened for hip dislocation, including ultrasound Graf angle measurement, to see if there are any problems in this area. There is also a relationship with fetal position, such as an increased probability of breech birth.