Help, hip dysplasia in 4wk old !

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My son was breech basically the entire time during pregnancy. He was born via c section and the doctors did an ultrasound to rule out hip dysplasia which I guess is common with breech babies. They said the right side looks suspicious so they want me to take him to an orthopedics doctor 3 hrs away. I made the appt but I want to know any experiences other mammas have had I know about the brace but does it work?? Will he have a limp??