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In human anatomy, arcuate foramen, also known as ponticulus posticus (Latin for "little posterior bridge"), refers to a bony bridge on the atlas (C1 vertebra) that covers the groove for the vertebral artery. It is a common anatomic variant and estimated to occur in approximately 3-15% of the population. Females are more commonly affected than males.
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|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Arcuate_foramen". A list of authors is available in Wikipedia.|