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Metopic ridge - Overview

Definition of Metopic ridge:

A metopic ridge is an abnormal shape of the skull. The ridge can be seen on the forehead.

Considerations:

A metopic ridge occurs when the two halves of the frontal bones of the skull join together too soon.

The metopic suture normally begins to close in the second year of life. It is usually completely closed during the third year. However, it remains unclosed throughout life in 10% of the population.

Common Causes:

Congenital craniosynostosis (particularly trigonocephaly) is a common cause of metopic ridge.

Metopic ridge

Reviewed last on: 10/31/2009
Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

Kaney PM. Congenital malformations of the skull and meninges. Otolaryngol Clin N Am. 2007;40:9-26.

Gunny RS, Chong WK. Paediatric neuroradiology. In: Adam A, Dixon AK, eds. Grainger & Allison's Diagnostic Radiology. 5th ed. New York, NY: Churchilll Livingston; 2008:chap 70.

Sutures - ridged

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