Girls, I'm starting to get nervous... We had an ultrasound of the hip …

Girls, I'm starting to get nervous... We had an ultrasound of the hip joints today... The technician said nothing except "Mom, stop strapping the baby and putting him on his feet, then everything will normalize!" I tell her that in my head I don't strap him or put him down so early! What she did was shrug her shoulders... In general, after the visit, I looked at the result in the electronic card, the baby has not formed the ossification center of the femur head on both sides... I'm starting to worry now... It should be already formed, or at least start forming... Has anyone been seen by an orthopedist with legs? When did yours form?