The recurrent artery of Heubner usually arises from the A1-A2 junction (between 44% and 62% of the time), but may arise from the proximal A2 segment (between 23% and 43%), or more rarely from the A1 segment (maybe up to 14% of the time).[3][4]
The recurrent artery of Heubner has a very variable diameter and length. It varies in width from 0.2 mm to 1.3 mm. It varies in length between 0.9 cm and 3.8 cm.[4]
Infarction of the artery may brachiofacial hemiparesis due to ischemia of the anterior limb of internal capsule.[2] More proximal portions of the artery may cause spastic paraparesis and sensory loss contralateral to the lesioned side. Urinary incontinence and gait apraxia may also occur. Occlusive damage to Heubner's artery may also present with contralateral grip reflex issues, and symptoms of frontal lobe disorder. Contralateral gaze preference with or without transcortical motor aphasia may present in instances where the left hemisphere is affected in this type of occlusion.
^ abcSara Bonasia; Michel Bojanowski; Thomas Robert (27 January 2020). "Embryology and variations of the recurrent artery of Heubner". Neuroradiology. 62 (4). Springer: 427–437. doi:10.1007/s00234-020-02372-5. PMID31984434. S2CID210914478.