Does a normal ultrasound examination of the hip joint for a baby mean it's normal?

Patient's question:

Sure, here is the translation of the content you provided:
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No
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Doctor's answer:

Lateral flexion test of the flexed knee and hip joint. If the abduction is 180 degrees, it is hip dysplasia. You can do hip exercises every day, and you must do it for your child. Also, learn how the southerners carry their children. You can take photos for observation after half a year.