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Arterial vascularization patterns of the splenium: An anatomical study

G Kahilogullari, A Comert, M Ozdemir

    Clinical Anatomy (New York, N.Y.)
    |April 9, 2013
    PubMed

    Insights

    Detailed study of the splenium of the corpus callosum (CC) arterial supply reveals complex vascular patterns. Understanding this brain region

    Area of Science:

    • Neuroanatomy
    • Vascular Anatomy
    • Neuroscience

    Background:

    • The splenium of the corpus callosum (CC) is a critical brain structure, forming the largest commissural tract.
    • Pathologies frequently affect the splenium, yet its precise arterial vascularization remains debated.
    • Existing literature lacks comprehensive anatomical detail on the splenium's blood supply.

    Purpose of the Study:

    • To elucidate the detailed arterial vascularization of the splenium of the corpus callosum.
    • To provide anatomical data crucial for understanding and treating splenium-related pathologies.
    • To address the ongoing debate and inadequacy of current research on this topic.

    Main Methods:

    • Analysis of 30 adult human brains (60 hemispheres) from routine autopsies.
    • Cannulation and latex injection of cerebral arteries.
    • Formaldehyde fixation followed by micro-dissection under surgical microscopy.
    • Measurement of arterial branch diameters at origin and observation of vascularization patterns.

    Main Results:

    • The splenium receives vascular supply from both anterior and posterior circulations.
    • Anterior pericallosal artery supplies 40% of cases; posterior pericallosal artery (88%) and posterior accessory pericallosal artery (50%) supply posterior circulation.
    • Vascularization patterns are highly variable between hemispheres and typically involve multiple arterial branches.

    Conclusions:

    • The arterial vascularization of the splenium of the corpus callosum is complex and variable.
    • This detailed anatomical knowledge is essential for neurosurgical interventions.
    • Crucial for managing conditions like splenial arteriovenous malformations.

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