Persistent Frontal Suture
In some individuals the suture can persist (totally or partly) into adulthood, and in these cases it is referred to as a persistent metopic suture). The suture can either bisect the frontal bone and run from nasion to bregma or persist as a partial metopic suture (see image of frontal bone) (where part of the suture survives and is connected to either bregma or nasion) or as an isolated metopic fissure. Persistent frontal sutures are of no clinical significance, although they can be mistaken for cranial fractures. As persistent frontal sutures are visible in radiographs they can be useful for the forensic identification of human skeletal remains; Persistent frontal sutures should not be confused with supranasal sutures (a small zig-zag shaped suture located at and/or immediately superior to the glabella).
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