The Timing of Physiologic Closure of the Metopic Suture: A Review of 159 Patients Using Reconstructed 3D CT Scans of the Craniofacial Region

Our findings suggest that normal or physiologic closure of the metopic suture occurs much earlier than what has been previously described. This study establishes that metopic fusion may normally occur as early as 3 months of age, and that complete fusion occurred by 9 months of age in all patients in our series. Therefore, 3-D CT scans showing complete closure of the metopic suture at an early age (3 to 9 months) cannot be considered as evidence of metopic synostosis, and thus, should not be the decisive factor for early surgical intervention.