Bilateral persistent 'second' intersegmental vertebral arteries: illustrated with a case.

Autor: Karthigeyan M; Department of Neurosurgery, Postgraduate Institute of Medical Education and Research (PGIMER), Sector 12, Chandigarh, 160012, India. karthigeyanm82@gmail.com., Salunke P; Department of Neurosurgery, Postgraduate Institute of Medical Education and Research (PGIMER), Sector 12, Chandigarh, 160012, India., Kataria MS; Department of Neurosurgery, Postgraduate Institute of Medical Education and Research (PGIMER), Sector 12, Chandigarh, 160012, India.
Jazyk: angličtina
Zdroj: Acta neurochirurgica [Acta Neurochir (Wien)] 2018 Aug; Vol. 160 (8), pp. 1621-1623. Date of Electronic Publication: 2018 Jun 23.
DOI: 10.1007/s00701-018-3601-1
Abstrakt: Congenital craniovertebral junction deformities can be associated with an anomalous vertebral artery (VA). At times, the artery crosses the joint posteriorly (i.e., persistent first intersegmental artery) and is at risk during posterior approach. We report a new variant, wherein the bilateral VA coursed medially after exiting the C3 transverse foramina to lie beneath C2 pars interarticularis and enter the foramen magnum (without passing through C2 transverse foramen anywhere along its course). This is possibly a result of bilateral persistent second intersegmental arteries. It is pertinent to recognize this unusual variant to avoid VA injury, especially while inserting C2 pars/transarticular screw.
Databáze: MEDLINE
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