Frontal branches of callosomarginal artery

The frontal branches of callosomarginal artery are cortical arteries that ascend from the callosomarginal artery to supply the medial and superomedial frontal cortex.

Branches

Important branches commonly associated with the callosomarginal artery include anterior, middle, and posterior internal frontal arteries. These arteries generally pass superiorly from the cingulate region, crossing the medial surface of the frontal lobe towards the superomedial border.

Distribution

Collectively, the frontal branches of callosomarginal artery supply:

• Medial frontal gyri, including the medial frontal areas involved in motor planning, executive function, motivation and behaviour

• Adjacent superior frontal cortex

• Portions of the cingulate region

• More posterior frontal branches may also contribute to the arterial supply of cortex associated with lower-limb motor function.

Clinical correlate

Ischaemia of these branches may produce varying combinations of contralateral lower-limb weakness, impaired initiation, executive dysfunction and behavioural changes.