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Microanatomical study of the insular perforating arteries
Matthieu Delion1, Philippe Mercier
1Department of Neurosurgery, Angers Teaching Hospital, 49933, Angers, France, matthieudelion@yahoo.com.
Long insular perforating arteries, originating from the middle cerebral artery, supply crucial white matter tracts. Careful surgical respect is vital to prevent neurological deficits.
Area of Science:
- Neuroanatomy
- Vascular Neurology
- Neurosurgery
Background:
- The middle cerebral artery gives rise to insular perforating arteries, with limited prior description.
- Existing literature categorizes them into short, medium, and long types, supplying deep brain structures.
Purpose of the Study:
- To detail the anatomy of long insular perforating arteries.
- To elucidate their contribution to the white matter of the oval center of Vieussens.
Main Methods:
- Dissection and microscopic photography of arteries in 20 adult cadaveric hemispheres.
- Arteries were perfused with colored latex prior to dissection.
Main Results:
- Long insular perforating arteries arise from M2 or M3 segments of the middle cerebral artery.
- These arteries supply corticospinal, corticonuclear, arcuate, and occipitofrontal tracts in the oval center.
- They perforate the insular cortex and contribute to motor and language pathways.
Conclusions:
- Long insular perforating arteries are critical vascular structures.
- Preservation during insular surgery is essential to avoid neurological deficits.
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