| Frontal suture | |
|---|---|
 Frontal view with frontal suture (red) | |
| Details | |
| Identifiers | |
| Latin | sutura frontalis |
| TA98 | A02.1.03.007 |
| TA2 | 1585 |
| FMA | 52989 |
| Anatomical terms of bone | |
The frontal suture is a fibrous joint that divides the two halves of the frontal bone of the skull in infants and children. Typically, it completely fuses between three and nine months of age, with the two halves of the frontal bone being fused together. It is also called the metopic suture,[1][2] although this term may also refer specifically to a persistent frontal suture.[3]
If the suture is not present at birth because both frontal bones have fused (craniosynostosis), it will cause a keel-shaped deformity of the skull called trigonocephaly.
Its presence in a fetal skull, along with other cranial sutures and fontanelles, provides a malleability to the skull that can facilitate movement of the head through the cervical canal and vagina during delivery. The dense connective tissue found between the frontal bones is replaced with bone tissue as the child grows older.
- ^ Herz JM, Kolb S, Erlinger T (2001). "A common binding site for channel-permeant cations and local anesthetics on the nicotinic acetylcholine receptor". Annals of the New York Academy of Sciences. 625 (1): 645–648. doi:10.1111/j.1749-6632.1991.tb33898.x. PMID 1711818. S2CID 29447310.
- ^ Podda S (18 August 2010). "Congenital Synostoses". Medscape.
- ^ "Metopic suture". The American Heritage, Stedman's Medical Dictionary. 2002.