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KMID : 1237720230560040435
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Anatomy & Cell Biology
2023 Volume.56 No. 4 p.435 ~ p.440
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Trabeculae in the basilar venous plexus: anatomical and histological study with application to intravascular procedures
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Viktoriya S. Grayson
Mitchell Couldwell
Arada Chaiyamoon
Juan J. Cardona
Francisco Reina
Ana Carrera
Erin P. McCormac
Kendrick Johnson
Sassan Keshavarzi
Joe Iwanaga
Aaron S. Dumont
R. Shane Tubbs
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Abstract
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Few studies have examined the basilar venous plexus (BVP) and to our knowledge, no previous study has describedits histology. The present anatomical study was performed to better elucidate these structures. In ten cadavers, the BVP wasdissected. The anatomical and histological evaluation of the intraluminal trabeculae within this sinus were evaluated. Onceall gross measurements were made, the clivus and overlying BVP were harvested and submitted for histological analysis.
A BVP was identified in all specimens and in each of these, intraluminal trabeculae were identified. The mean number oftrabeculae per plexus was five. These were most concentrated in the upper half of the clivus and were more often centrallylocated. These septations traveled in a posterior to anterior direction and usually, from inferiorly to superiorly however somewere noted to travel horizontally. In a few specimens the trabeculae had wider bases, especially on the posterior attachmentto the meningeal layer of dura mater. More commonly, the trabeculae ended in a denticulate form at their two terminalends. The trabeculae were on average were 0.85 mm in length. The mean width of the trabeculae was 0.35 mm. Theseseptations were consistent with the cords of Willis as are found in the lumen of some of the other intradural venous sinuses.
An understanding of the internal anatomy of the BVP can aid in our understanding of venous pathology. Furthermore, thisknowledge will benefit patients undergoing interventional treatments that involve the BVP.
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KEYWORD
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Plexus, Intravascular procedures, Sinus, Anatomy, Clivus
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