Therefore, it produces a flattening of the forehead and the brow on the affected side, with the forehead tending to be excessively prominent on the opposite side. This is called coronal synostosis and it causes the normal forehead and the brow to stop growing. Coronal synostosis – The right and left coronal sutures run from each ear to the sagittal suture at the top of the head. The skilled surgeons of St. Louis Children’s Hospital treat coronal synostosis and all other types of craniosynostosis in infants. Coronal synostosis is one type of craniosynostosis affecting the shape of the front of the head. Coronal synostosis refers to the premature closure of one of the coronal sutures, which are the joints that separate the two frontal bones from the two parietal bones. coronal craniosynostosis; metopic synostosis; lambdoid synostosis; It is possible to have just one type or a combination of them. When one of these sutures closes too early, the baby may have a flattened forehead on the side of the skull that closed early (anterior plagiocephaly). Coronal Suture Synostosis affects the side of the skull where the forehead and the frontal lobe grow and expand forward. The term craniosynostosis refers to the premature fusion of the bones of an infant’s head. When this suture closes too early, the condition is known as anterior plagiocephaly (a merge from either the right or left side of the coronal suture that runs from ear to ear). Each type looks different, and the symptoms … One side of your child’s face may look markedly different from the other side. It creates a flattened forehead and brow on the affected side, with the forehead tending to be overly prominent on the other side. In coronal craniosynostosis, the fusion occurs in one or both of the two sutures that run from the top of the ear to the top of the skull. In infants with this condition, the most common signs are changes in the shape of the head and face. The subdivisions of craniosynostosis include sagittal synostosis, coronal synostosis, metopic synostosis, and lambdoid synostosis. The coronal bone gap created from the advancement and harvesting of bone is then filled with particulate bone shavings harvested with a manual hand-held burr-hole instrument or commercial harvester (eg, Safe scraper) from the frontal bone flap or the posterior skull. Bilateral (both sides) coronal craniosynostosis, the most common syndromic form, causes a short and wide head. The coronal sutures extend across the skull, almost from one ear to the other. Unilateral (one side) coronal craniosynostosis causes a rotated appearance to the face with flattening of the forehead and elevation of the eye socket roof on … These are known as the coronal sutures. ... What are the symptoms of craniosynostosis? Coronal craniosynostosis. 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