Blood supply of internal capsule

Blood supply of internal capsule comes from 3 main arteries they are

Lateral striate branches of middle cerebral artery.
Medial striate branches of anterior cerebral artery.
Anterior choroidal branches of internal carotid artery.

Lateral striate branches of middle cerebral artery supply

1. Anterior limb.
2. Genu.
3. Posterior limb.
4. Basal ganglia.

Medial striate branches of anterior cerebral artery supply

1. Anterior limb.
2. Genu.
3. Basal ganglia.

Anterior choroidal branches of internal carotid supply

1. Posterior limb.
2. Retrolenticular part.

Anterior limb is supplied by the following arteries

1. Ant cerebral artery through medial striate branch.
2. Middle cerebral artery through lateralstriate and lenticulostriate branches.

Genu is supplied by

1. Anterior cerebral artery through medial striate branch.
2. Middle cerebral artery through lateral striate and lenticulostriate branch.
3. Branches of internal carotid artery.

Posterior limb is supplied by

1. Middle cerebral artery through lateral striate and lenticulostriate branch. It is called Charcot’s artery of cerebral haemorrhage.
2. Anterior choroidal artery, direct branch of internal carotid artery As it is long and slender it has tendency to get thrombosis.