In
human anatomy, arcuate foramen, also known as ponticulus posticus (
Latin for "little posterior bridge") or Kimmerle's anomaly,[1] 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.[2][3][4] It occurs in females more commonly than males.[3][5] The ponticulus posticus is created through ossification of the posterior atlantooccipital ligament.
^Koutsouraki E, Avdelidi E, Michmizos D, Kapsali SE, Costa V, Baloyannis S (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. 120 (3): 236–9.
doi:
10.3109/00207451003597193.
PMID20374094.
S2CID37294923.
^
abCushing K, Ramesh V, Gardner-Medwin D, Todd N, Gholkar A, Baxter P, Griffiths P (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. 43 (7): 491–6.
doi:
10.1017/S0012162201000901.
PMID11463182.
Full Text.
^
abcCakmak O, Gurdal E, Ekinci G, Yildiz E, Cavdar S (2005). "Arcuate foramen and its clinical significance". Saudi Med J. 26 (9): 1409–13.
PMID16155658.