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Arcuate foramen

Anatomical variation in the neck

In human anatomy, arcuate foramen, also known as ponticulus posticus (Latin for "little posterior bridge") or Kimmerle's anomaly, refers to a bony bridge on the atlas (C1 vertebra) that covers the groove for the vertebral artery. It is a common anatomical variation and estimated to occur in approximately 3-15% of the population. It occurs in females more commonly than males. The ponticulus posticus is created through ossification of the posterior atlantooccipital ligament.

Pathology

The presence of arcuate foramen is associated with headache, musculoskeletal pain and vertebrobasilar stroke.

References

(2010). "Kimmerle's anomaly as a possible causative factor of chronic tension-type headaches and neurosensory hearing loss: case report and literature review". Int. J. Neurosci..
(2001). "Tethering of the vertebral artery in the congenital arcuate foramen of the atlas vertebra: a possible cause of vertebral artery dissection in children". Dev Med Child Neurol.
(2005). "Arcuate foramen and its clinical significance". Saudi Med J.
(2005). "The ponticulus posticus: implications for screw insertion into the first cervical lateral mass". J Bone Joint Surg Am.
Stubbs D. (1992). "The arcuate foramen. Variability in distribution related to race and sex". Spine.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

skeletal-system human-head-and-neck anatomical-variations

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