type I (below) 4 months old the bony roof is good

the bony rim blunt

the cartilage roof cover the head;

the arrows show labrum (red) ;

the bony rim   (blue);

the lower iliac margin (green) ,

the bony roof line (green) is extends tangential to the lower iliac margin and tangent to the bony rim

the cartilage roof line(blue) is drown tangential to the bony rim and through the middle point of the labrum echo ;

the baseline (yellow) is drown parallel to ilium echo through the point of the junction of the perichondrium,the periosseum and ilium.

Type IIa(GN coming to maturily) 6 weeks (below)

the bony roof satisfactory modeling

the bony rim angular  but bony roof is only satisfactory ,the first part of bony roof is very good,but  the second tail (deeper) is only satisfactory.

the cartilage roof cover the head;

the arrows show labrum (red) ;

the bony rim   (yellow);

the lower iliac margin (blue) ,

the bony roof line (blue) is extends tangential to the lower iliac margin and tangent to the bony rim

the cartilage roof line(green) is drown tangential to the bony rim and through the middle point of the labrum echo;

asymmetry in the loose joint  capsule; family DDH(  when it occurs ask always about it)

the baseline (yellow) is drown parallel to ilium echo through the point of the junction of the perichondrium,the periosseum and ilium.

type I (abow) 6 weeks the bony roof is good

the bony rim blunt

the cartilage roof cover the head;

the arrows show labrum (red) ;

the bony rim   (yellow);

the lower iliac margin (blue) ,

the bony roof line (blue) is extends tangential to the lower iliac margin and tangent to the bony rim

the cartilage roof line(green) is drown tangential to the bony rim and through the middle point of the labrum echo ;

asymmetry in the loose joint  capsule ,family DDH(  when it occurs ask always about it)

the baseline (yellow) is drown parallel to ilium echo through the point of the junction of the perichondrium,the periosseum and ilium.