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Is There a Relationship Between the Severity of Metopic Synostosis and Speech and Language Impairments?

The occurrence of cognitive impairment and behavioral problems in patients with metopic synostosis has been described. The relationship between the severity of metopic synostosis and the incidence of speech and language delays has not been established. Twenty patients with nonsyndromic isolated metopic synostosis were evaluated. Five different preoperative measurements (metopic angle at the roof of the orbit, angle of lateral orbital wall at the sella, cranial indices, and distances between medial orbital walls and lateral orbital walls) were taken from computed tomography and compared with results from postoperative speech and language assessments. Frontal orbital advancement and remodeling were carried out by the same surgical team at a mean age of 1 year 4 months. Speech and language were assessed at 3 and 5 years. Six of the 20 patients had delayed speech and language developments. No consistent trend was observed linking the severity of frontal stenosis using the measured parameters with speech and language delays. Speech and language impairments in these patients cannot be explained by a physical concept, causing mechanical compression of the frontal lobes.