Out of the misunderstanding: baby hip lines, thigh lines asymmetry is only a hint signal, but does not necessarily indicate a problem. Uneven distribution of fat in the baby’s lower limbs can lead to asymmetrical skin lines, especially fat babies are more likely to have asymmetrical hip skin lines. Therefore, the judgment of hip dysplasia should not be based only on the asymmetry of hip skin tattoos. The asymmetry of the thigh and hip lines of the baby’s lower limbs is a concern for many parents, and the biggest worry is whether the baby has unilateral hip dislocation. This is a developmental hip dislocation and if detected, the earlier it is treated, the better the outcome. However, babies can also have asymmetrical hip lines under normal circumstances, so it is especially important to learn the correct way to check. How can I examine my baby? You can ask the pediatrician or orthopedic surgeon to check: check, the baby lying on his back, observe whether the two lower limbs are equal length, equal length is normal, the two lower limbs are not equal length indicates that there is unilateral dislocation of the hip joint; lying down position flexion of the hip flexion of the knee feet on the bed, such as the two knees are equal as the normal knee height, unilateral dislocation of the hip joint, the two knees are unequal in height, and further diagnosis can be made ultrasound examination. Mothers can also give the baby to do the “abduction test”: the baby’s legs first straight and together, and then together with the knees bent up, and then the two knees apart, the baby’s two legs like frogs legs apart and downward pressure, until the legs and the bed parallel to the end. If they cannot be parallel at least 80 degrees of downward pressure is possible, if not or if risk factors are present, further examination by a specialist is required to clarify the presence of disease. Clinical epidemiology has found a high prevalence of hip dysplasia in regions or ethnic groups where it is customary to wrap newborn babies in “candle wraps” or tie up the baby’s lower legs, such as Indian tribes in North America and parts of the northern part of China. On the other hand, in Africa or parts of the south of China, the incidence of hip dysplasia is significantly lower in areas where parents hold their babies’ lower limbs separately due to the hot weather. These phenomena tell us that in the process of growth and development of the baby, the method of bringing up the baby is also very important. We advocate the use of diapers for babies, and the use of more riding straddles and more carriers to carry babies when carrying them. In this way, let the baby’s legs naturally and gently outward, and maintain the state of activity, the femoral head and joint capsule to get natural “treatment”, even if the baby originally has the basis of the disease, most of them can also be cured. Warm tips hip lines, leg lines asymmetry is one of the early signals of abnormal hip development in infants and young children, and similar signals are also split leg tight, two legs are not the same length, the affected limb activity is reduced. These signals often indicate that the baby may have early hip developmental abnormalities.