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1. Concept of congenital hip dislocation and causes of occurrence
Why did my child's hip fall out?
A hip dislocation is a missing thigh or thigh bone in the pelvic bone. Congenital hip dislocation often occurs when a child is pregnant for the first time, or when the buttocks are in a downward position in the mother's womb. This is because if the uterus is not stretched enough and there is not enough space, the child's body will be pressed. Especially in the fetal period, children with their hips facing downward are more likely to develop hip dislocation due to gravity compressing the legs below the hips.
Congenital hip dislocation must be detected within 6 months before it can be corrected with a brace without surgery. Therefore, children will be examined for the first time during the screening of infants and toddlers of 4~6 months.
2. Diagnostic methods of congenital hip dislocation
Is there a way to test for hip dislocation at home?
It's a popular belief that hip dislocation should be suspected when a child's thigh crease is different. To be precise, it is a good idea to check the diaper line on the child's groin side. Also, the 'Ellis sign', which involves placing your child's knee under the sole of the foot and comparing the height of the two to see if the two are the same, is also a good way to check for hip dislocation.
In fact, even in hospitals, when examining infants and toddlers aged 4~6 months, they compare the knee height first, and then perform a hip dislocation test by tapping the child's leg as if massaging it. If the joint is missing, you will hear a rattling sound in your leg. If additional x-rays or ultrasound confirm the dislocation, treatment is carried out with a brace.
Congenital hip dislocation requires surgery after 6 months, so early screening is important. Parents of children should check whether their child has a dislocation during the infant checkup, and if there is any suspicion, get a diagnosis.
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