What are the clinical manifestations of children with hip dislocation? 1. limited joint activity typical symptoms complained of the child limb was flexed not dare to straighten, activity is worse than the healthy side, powerless, pulling the lower limb can be straightened, but let go and then flexed, a few infants lower limbs were externally rotated position, the outer booth or the lower limbs were crossed, and even the hip joint was completely stiff, a small number of children in the lower limb when the pulling of the crying noise. 2. Shortening of limbs Unilateral hip dislocation is commonly seen in shortening of the affected limbs. 3. Other common symptoms include asymmetry of labia majora, skin folds on buttocks, inner thighs or N fossa, deepening or asymmetry, widening of perineum, and sometimes there is “popping sound” or bouncing sensation when pulling the affected limbs. If some of the above symptoms can be detected in time and carefully examined, timely diagnosis and treatment can be made, and the therapeutic effect will be greatly improved. Although early diagnosis is very important, there are still many cases that come to the clinic because of claudication. This type of gait can be seen when walking with a little analysis. When the child walks, the affected limb in the weight-bearing phase is pelvic with a drooping, wobbling, inability to rise: in the swinging phase it is not obvious. The diagnosis is usually made after the child is walking, at the earliest from the age of 2 years, but it is treated later. The child with bilateral hip dislocation has a very pronounced handful of movements on both sides of the pelvis during walking, often referred to as a duck-step wobble posture, with the hips protruding backwards and the lumbar spine protruding forwards, which makes it easy to think of a hip dislocation on examination. The treatment of congenital hip dislocation should be strong early diagnosis, the treatment of infancy is the best, the older the worse the effect, it is generally believed that the treatment after the age of 2 to 3 years, even if very successful. After the age of 35 years, hip pain will occur, so most scholars emphasize the need for newborn census, so that early diagnosis and treatment is an important measure to get cured. Teratocarpal dislocation, there is no good treatment, usually need to be cut and reset, but the effect is not good. Typical congenital hip dislocation, if early and correct treatment, under the stimulation of normal function, the development of normal hip joint is very likely. Those treated within 3 years of age have a high cure rate. With the growth of age, the bony components of the femoral head and acetabulum increase, plasticity decreases, and the pathological changes worsen, and it is difficult to achieve normal function despite correct treatment. The clinical manifestations are completely different at different ages and the treatment programs are also different.