Suture fusion, also known as craniosynostosis, is a condition where the sutures in a baby's skull close prematurely. Sutures are the flexible joints between the bones of the skull that allow for growth as the brain develops. When these sutures fuse too early, it can restrict skull growth and lead to an abnormal head shape. This condition can affect brain development and may require medical intervention. Treatment often involves surgery to correct the shape of the skull and allow for normal brain growth. Early diagnosis and intervention are crucial for optimal outcomes in children with craniosynostosis.