Skull & Cranial Anatomy

Metopic suture

The metopic suture is the midline suture of the forehead, between the two halves of the frontal bone.

In short: Metopic suture

  • It runs down the middle of the forehead.
  • It separates the two halves of the frontal bone.
  • It often fuses early in childhood.
  • It is a landmark near where frontal encephaloceles occur.

What it is

It is the midline forehead suture, running down the center of the forehead between the two halves of the frontal bone. Unlike most sutures, it often fuses early in childhood.

Understanding Metopic suture

It is a landmark of the forehead near where frontal and interfrontal encephaloceles occur, and is part of normal skull anatomy. Because it fuses earlier than other sutures, it is a recognizable feature in the developing skull.

Why it matters

Understanding the metopic suture helps families locate forehead findings relative to normal skull landmarks, near where anterior encephaloceles arise.

Common questions

Where is it?

Down the midline of the forehead.

What does it separate?

The two halves of the frontal bone.

Does it fuse early?

Often, yes — earlier than most sutures.

Bottom line

The metopic suture is the midline forehead suture between the halves of the frontal bone.

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