The meaning of the flat seam on the skull


There are five main joints, or sutures, that connect the bones of the skull. These flexible joints allow the bones of the skull to adapt to the growth of the brain during childhood.

The flat suture is of particular importance because it connects the parietal bones, which form the roof and sides of the skull, with the temporal bones, which form the side and base of the skull.

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Skull anatomy

A baby's skull is made up of plates of bone, sutures, and fontanelles that work together to protect the brain and give it room to grow. The points act as flexible joints that allow the skull to form during delivery. They also allow the brain to grow during childhood.

The fontanelles in your child's skull, often called "soft spots," are in the spaces between the bones where the sutures cross. These open spaces are covered with durable membranes that protect your baby's brain.

The anterior fontanel is located at the crown of the head, where the two frontal and parietal bones meet. This fontanel remains open until your baby's second birthday. The posterior fontanelle is located closer to the back of your baby's skull, where the two parietal bones meet the occipital bone. This fontanel usually closes first.

Five skull sutures

A flat suture runs the length of the face, connecting the parietal bones with the temporal bones on either side of the head.

In addition to the flat seam, other important seams on the baby's skull include:

  • Coronal Suture : The coronal suture runs from ear to ear through the crown of the head. It connects both frontal bones with the parietal bones.
  • Sagittal Suture – The sagittal suture runs from the crown to the back of the head. Connect the two parietal bones together.
  • Metopic suture : The metopic suture runs from the crown of the nose to the crown of the head. Connect the two front bones together.
  • Lambda Suture : The lambda suture goes through the back of the head. It connects both parietal bones with the occipital bone at the back of the skull.

The meaning of the flat seam on the skull

Sutures are responsible for connecting the bones of the skull before they heal. When your baby is born, flexible sutures allow it to pass through the birth canal. During labor and delivery, sutures allow the bones of the skull to overlap to pass through the birth canal. This protects the brain from pressure and damage.

The flat suture acts as a compensator between the parietal and temporal bones. As the brain grows in childhood, the stitches allow the skull to grow and expand. If the skull was unable to expand in infancy, your child's brain would begin to press against the hard bones. This will increase stress on the brain and possibly damage the brain.

A flat suture can heal prematurely, causing the bones to stick together and harden. This condition is known as craniosynostosis . Squamous craniosynostosis is rare and can occur as part of a genetic disorder.

Deformation of the seams: what to look for

Suture tension refers to situations where the sutures on the baby's skull are put under pressure or stretching. This can happen during a skull injury or due to an underlying condition that causes increased pressure in the brain, known as increased intracranial pressure .

When pressure increases on the baby's skull, the points naturally stretch to accommodate the increased pressure. This adaptation puts them to the test.

Knowing the signs of increased intracranial pressure is helpful in determining whether your baby is experiencing suture sprains. First, assess your baby's anterior fontanelle at the vertex. If it looks bulky, it may indicate increased pressure in the skull.

Other signs of increased intracranial pressure in newborns and infants include:

  • Irritability
  • Threw up
  • Drowsiness
  • Keep your eyes on all the time

Increased intracranial pressure is a medical emergency.


Sutures are flexible structures that allow your baby's head to pass through the birth canal and allow room for his brain to grow during infancy. A flat suture connects the parietal bones, which are part of the lateral and upper part of the skull, with the temporal bones, which are part of the lateral and lower part of the skull. A condition called craniosynostosis can lead to premature healing of the suture, which increases pressure on your child's brain. Increased intracranial pressure requires immediate treatment.

Get the word of drug information

The bones, sutures, and fontanelles of your baby's skull work together skillfully to protect his brain and make room for normal brain growth. Flat sutures are flexible joints that connect the baby's parietal bones to the temporal bones on either side of the face.

If you notice any change in the shape of your child's head or skull, see a doctor immediately. Any sign of increased intracranial pressure, such as a bulging fontanel, requires immediate treatment.

Frequently asked questions

Are squamous suture and squamous suture the same?

Yes, the terms "squamous suture" and "squamous cell suture" refer to the same suture that connects the temporal and parietal bones of the skull.

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