Can “hip exercises” cure hip dysplasia in infants? With the popularization of medical science and parents’ awareness of their children’s health care, many local and primary hospitals in China are carrying out hip screening for newborns and infants within 6 months of age, and the early detection of hip dysplasia through hip ultrasound screening has yielded good results and is worthy of recognition and promotion. Beijing Jishuitan Hospital reported 1277 cases of 1556 side hip initial artificial total hip replacement etiology analysis of hip dysplasia accounted for about 29% of the number of the second place, second only to femoral head necrosis. Lloyd-Roberts et al. reported that about one-third of hip osteoarthritis (OA) is caused by hip dysplasia in infancy and childhood. The underlying etiology of hip dysplasia appears in infancy, and the typical symptoms of osteoarthritis, such as hip pain and claudication, usually appear at the age of about 30 years. Therefore, the serious consequences of hip dysplasia in infants and young children may not manifest until the child is an adult. Regardless of the accuracy of hip ultrasound screening in China, it is an indisputable reality that the level of medical diagnosis varies greatly from region to region and from hospital to hospital. As for hip dysplasia detected by hip ultrasound, many doctors recommend parents to do “hip exercises”, “frog exercises” and “hip abduction exercises” for treatment. There are senior doctors from tertiary hospitals, young doctors from community hospitals, orthopedic surgeons and health care doctors. I remember an incident in Shanghai in March 2013 where a 2-month-old baby was suspected to have suffered a thigh fracture while doing “hip exercises” at a mother and baby monthly clinic, which caused a furore and received widespread attention. I don’t dare to comment on the rights and wrongs involved, but there is one point: can hip dysplasia be treated by doing exercises (including frog exercises, hip exercises, hip abduction exercises and other various exercises)? Where is the theoretical basis and the retrospective evaluation of a large sample? As far as I know, the effect of exercises on the treatment of hip dysplasia in infants and children has been clinically proven so far! In other words, there is no sufficient evidence so far to prove that doing exercises can cure hip dysplasia! This should be taken very seriously by doctors and parents. After the incident, the Health Supervision Institute of Shanghai Health Bureau clearly stated that using physical methods to simply care for infants and toddlers does not involve medical means such as diagnosis and treatment, and is not a medical practice. If you think about it, how can you treat hip dysplasia in infants and toddlers if you can’t even link it to medical treatment? In the end, doing various hip exercises is to passively move the child’s hip joints, just like parents usually move their children’s knee joints, elbow joints, wrist joints and other countries, only to move the child’s hip joints, which can improve blood circulation, promote joint metabolism, soothe the muscles, that’s all!