Congenital dislocation of the hip joint (the current international collective name: developmental hip dysplasia) Jinan Children’s Hospital Pediatric Surgery Department Sun Liquan The disease has been included in the scope of the current census, that is, community clinics around the world and maternal and child health care stations will be the first to tell the parents of highly suspected of the child to the Children’s Hospital in time to check in order to intervene early. The following are things that parents should be aware of: 1. Both legs have thickness or length, and the leg on the side with the disease will be thinner and shorter.2 The hip joints on one or both sides are less likely to spread outward.3 One side of the leg has more or deeper wrinkles than the other, and the two sides are asymmetrical.4 One side of the buttocks is large and bulges outward.5 One side of the perineum widens, and this is more pronounced in bilateral dislocations.6 One side of the hip joints has less movement, and is limited in its movement. The pedal strength is weaker than that of the healthy side. It is often in a flexed position and cannot be straightened. Even if the leg is straightened, it will shrink back when the hand is released.7. There is a popping sound or popping sensation when pulling the patient’s lower limbs, and sometimes the patient will cry.8. When changing diapers, the baby’s legs are not easy to separate, and even if they are separated, you will hear the sound of ‘kata’. The cure rate of this disease is almost 100%, but the treatment process is more troublesome and difficult for babies, and the baby’s difficulty is the mother’s greatest pain. The baby’s suffering is the mother’s greatest pain, so the earlier the disease is detected, the less pain the baby will suffer. If the baby has to wear the braces for 23 hours a day, the mother’s heart will be saddened to death. However, it is important to keep in mind that uneven hips is a manifestation of pre-g, but uneven hips does not necessarily mean that there is a pre-g disease. See the baby hip lines are not aligned, do not think it must be first g, to go to the strength of the big hospital examination, do ultrasound to confirm the diagnosis, now all over the comprehensive children’s hospital ultrasound room are equipped with professionally trained technicians, accept the American inventor Graf’s professional certification. At present, there have been many actually is not the first g, but was diagnosed as the first g example, especially some private so-called look at the “first hip” professional physicians, their ideas and treatment equipment basically does not meet the national standards, and the patient’s initial X-rays are not given to the parents, for the treatment of the results of the judgment of only they know, to think of the regular hospital! Ask again about the results of treatment, the doctor in the absence of the first film is very difficult to give you a satisfactory answer. Nowadays, people with medical knowledge no longer accept the so-called rumors, where “the treatment can be god”, “many patients have to be good, it’s very simple”, but go to the regular hospital to consult before deciding. The baby in four months before the ultrasound neither radiation has accurate, the results of x-ray is not very accurate, because the baby can not be in accordance with the standard posture fixed immobile for you to shoot, a slight movement of this shooting value is not accurate. ultrasound measurement of the first hip there are two indexes: α Angle and β Angle. α Angle is the acetabular apex and the baseline of the angle between the line to measure the bony acetabulum of the convexity of the acetabulum. α Angle is a small indication of the bony acetabulum shallow. β Angle is the angle between the baseline and the oblique line of the acetabulum and the angle of the acetabulum. the angle between the baseline and the oblique line, indicating the extent of additional coverage of the femoral head by the cartilaginous acetabular rim. In the measurement, type I is normal, α angle is more than 60° β angle is less than 55°; type II has delayed ossification, α angle is between 44°-60°, β angle is between 55°-77°; type III α angle is less than 43°, β angle is more than 77°; type IV is complete dislocation of the hip joint. within 6 months of the uniform Pebbleback sling, after that, the frog brace, one and a half years of age invalid to be surgical treatment, so it is necessary to detect early, early treatment, the pain comes less. Early treatment, the pain comes less.