FETAL SKULL
The fetal skull is made of thin, pliable, membranous bones that are not fully fused, allowing it to
compress and mold during vaginal birth. It is a oval shaped.
Landmark of skull
vault
Face
base
Bone of vault
Two frontal bone.
Two parietal bone.
The occipital bone.
Sutures -Sutures are essential joint and are formed where two bones adjoin.
Frontal suture -lies between frontal Bone.
Sagital sutures -lies in between two parietal bone.
Coronal sutures - each between frontal and parietal bone either side of the head .
Lambdoid suture -it seprate the occipital bone and parietal bone.
, Importance of suture
Gliding movement during moulding.
To check engagement, position etc.
Fontanelle -Wide gap in the suture line called fontanelle. There are two type of
fontanelle. present -
1. Anterior fontanelle.
2. Posterior fontanelle.
1.Anterior fontanelle -
It is formed by the joining of frontal,sagital and coronal sutures.
Shape diamond.
Diameter about 3cm.
Closing 18month after birth.
3. posterior fontanelle -
Formed by 3 sutures, sagital and two lambdoid suture .
Shape triangular.
The fetal skull is made of thin, pliable, membranous bones that are not fully fused, allowing it to
compress and mold during vaginal birth. It is a oval shaped.
Landmark of skull
vault
Face
base
Bone of vault
Two frontal bone.
Two parietal bone.
The occipital bone.
Sutures -Sutures are essential joint and are formed where two bones adjoin.
Frontal suture -lies between frontal Bone.
Sagital sutures -lies in between two parietal bone.
Coronal sutures - each between frontal and parietal bone either side of the head .
Lambdoid suture -it seprate the occipital bone and parietal bone.
, Importance of suture
Gliding movement during moulding.
To check engagement, position etc.
Fontanelle -Wide gap in the suture line called fontanelle. There are two type of
fontanelle. present -
1. Anterior fontanelle.
2. Posterior fontanelle.
1.Anterior fontanelle -
It is formed by the joining of frontal,sagital and coronal sutures.
Shape diamond.
Diameter about 3cm.
Closing 18month after birth.
3. posterior fontanelle -
Formed by 3 sutures, sagital and two lambdoid suture .
Shape triangular.