Hemiplegia is most often caused by thrombosis of:
Anterior cerebral aery
Middle cerebral aery
Posterior cerebral aery
Basilar aery
Hemiplegia occurs most commonly due to occlusion of middle cerebral aery. Paraplegia occurs due to occlusion of anterior cerebral aery. Posterior cerebral aery occlusion leads to Homonymous visual-field cut, usually a complete hemianopia Macular or central field sparing can occur if the occipital pole remains intact through blood supply from a branch of the middle cerebral aery.
Stroke and TIA