Hi Bridg,

I'm no expert but I'm wondering if they are looking for a dislocatable hip? Especially if his hips are clicking.

My DD1 had Congenital Hip Dysplaysia and had hip u/s at 6 and 12 weeks and DD2 had an u/s at 6 weeks too but didn't have it.

Anyway the u/s is not as bad as having to strip the bub nude and hold them down - OMG by the way!! They have this little wedge thingie that they lie bub in on his/her side so they can't move, you just move enough clothes out of the way so they can access the hip - it is really quite gentle. DD2 slept throught it all!

HTH a little and best of luck