Marginal sinus

The marginal sinus is a dural venous sinus surrounding the margin of the foramen magnum inside the skull,[2] accommodated by the groove for marginal sinus.[3] It usually drains into either the sigmoid sinus, or the jugular bulb. It communicates with the basilar venous plexus anteriorly, and the occipital sinus posteriorly (the posterior union of the left and the right marginal sinus usually representing the commencement of the occipital sinus[2]); it may form extracranial communications with the internal vertebral venous plexuses, or deep cervical veins.[4]

Marginal sinus
Details
Drains tosigmoid sinus, or jugular bulb
Identifiers
LatinSinus marginalis[1]
Anatomical terminology

Clinical significance

Arteriovenous fistulas involving the marginal sinus have been described - often following basilar skull fractures.[2]

The marginal sinus must be traversed during surgical entry into subdural space deep to the foramen magnum.[2]

References
  1. "Anatonomina". www.terminologia-anatomica.org. Retrieved 2023-03-10.
  2. Shane Tubbs, R. (2020-01-01), Tubbs, R. Shane (ed.), "Chapter 14 - The Marginal Sinus", Anatomy, Imaging and Surgery of the Intracranial Dural Venous Sinuses, Philadelphia: Elsevier, pp. 131–133, ISBN 978-0-323-65377-0, retrieved 2023-03-10
  3. "sulcus sinus marginalis". TheFreeDictionary.com. Retrieved 2023-03-10.
  4. Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. p. 404. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
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