The metopic suture is a midline cranial suture between the two halves of the Frontal bone. Physiologically, it fuses during early childhood, typically between the 1st and 8th years of life. If the suture persists beyond this period into adulthood, it is referred to as a persistent metopic suture or metopism.
Neurosurgical relevance
For neurosurgery and craniofacial surgery, the metopic suture is relevant primarily because of its differential diagnosis from a fracture and its significance in craniosynostotic malformations[^1].