metopic suture

Frontal suture

The frontal suture is a dense connective tissue structure that divides the two halves of the frontal bone of the skull in infants and children. It usually disappears by the age of six, with the two halves of the frontal bone being fused together. If it does not disappear it may be called a "metopic suture" or "sutura frontalis persistens." If the suture is not present at birth (craniosynostosis) it will cause a keel-shaped deformity of the skull called "trigonocephaly."

It is present in a fetal skull so that the skull can bend and is very elastic at the time of birth. The baby's head literally bends when coming out of the mother's womb. The space is filled as the child grows older.

See also


  • "Frontal Suture." Stedman's Medical Dictionary, 27th ed. (2000). (
  • Moore, Keith L. and T.V.N. Persaud. The Developing Human: Clinically Oriented Embryology, 7th ed. (2003).
  • pediatric plastic surgery, mathes and Hetz. chapter 92; nonsyndromic craniostosis.

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