Metopic synostosis
- the metopic suture runs down the midline of the forehead
- if there is premature fusion of this suture (metopic synostosis) then this results in a triangular shaped forehead called trigonocephaly
- in metopic synostosis, a bony ridge is generally palpable - this extends from the bridge of the nose to the upper part of the forehead
- premature fusion results in a prominent midline keel with lateral recession of the brows
- from the frontal view these patients typically have the appearance of hypotelorism or decreased distance between the eyes
- incidence of metopic synostosis in most cases of craniosynostosis is between 5-10%
- deformity is usually obvious at birth, but the severity of the anomaly may vary
- in metopic synostosis, a bony ridge is generally palpable - this extends from the bridge of the nose to the upper part of the forehead
- treatment involves releasing the suture and expanding and rounding out the upper face, forehead and skull
- if there is premature fusion of this suture (metopic synostosis) then this results in a triangular shaped forehead called trigonocephaly
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