Trigonocephaly

Last revised by Joshua Yap on 15 Apr 2023

Citation, DOI, disclosures and article data

Citation:

Dixon A, Yap J, Chieng R, et al. Trigonocephaly. Reference article, Radiopaedia.org (Accessed on 23 Apr 2024) https://doi.org/10.53347/rID-10292

DOI:

https://doi.org/10.53347/rID-10292

Permalink:

https://radiopaedia.org/articles/10292

rID:

10292

Article created:

2 Aug 2010, Andrew Dixon ◉

Disclosures:

At the time the article was created Andrew Dixon had no recorded disclosures.

View Andrew Dixon's current disclosures

Last revised:

15 Apr 2023, Joshua Yap ◉ ◈

Disclosures:

At the time the article was last revised Joshua Yap had no financial relationships to ineligible companies to disclose.

View Joshua Yap's current disclosures

Revisions:

11 times, by 8 contributors - see full revision history and disclosures

Systems:

Central Nervous System, Paediatrics

Tags:

skull, refs

Trigonocephaly refers to the triangular appearance of the frontal skull created by premature fusion of the metopic suture (metopic craniosynostosis) ². Trigonocephaly accounts for around 5% of all craniosynostosis cases ⁴.

Epidemiology

Associations

Jacobsen syndrome

Pathology

The metopic suture divides the frontal bones in the midline. It begins at the nose and continues superiorly to meet the sagittal suture. The metopic suture is usually open at birth and normally fuses in the first 12 months of life. Premature fusion prevents transverse growth of the forehead which causes a triangular-shaped forehead that may be associated with orbital hypotelorism (abnormal closeness of the eyes), as well as ethmoid hypoplasia ^3,4.

Quiz questions

References

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