A neurosurgical assessment of the blood supply in the optochiasmatic system: a cadaveric-anatomic study
| Autor: | Recep Fedakar, Duygu Baykal, Selcuk Yilmazlar |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
genetic structures
Cerebral arteries Optic chiasm Autopsy 03 medical and health sciences medicine.artery medicine Cadaver Humans 030304 developmental biology 0303 health sciences business.industry Optic Nerve General Medicine Anatomy Cerebral Arteries eye diseases Anterior communicating artery medicine.anatomical_structure 030301 anatomy & morphology Perforating arteries Optic Chiasm Optic nerve Circle of Willis Blood supply Cadaveric spasm business |
| Zdroj: | Anatomical science international. 96(2) |
| ISSN: | 1447-073X |
| Popis: | The chiasmal and subchiasmal surfaces are of critical importance in connection with the performance of surgical procedures owing to the critical blood supply to these areas. Recently, the perforating arteries providing the blood to the optic nerves and chiasm have gained attention as they significantly affect the morbidity from surgical approaches. Intraoperative preservation of these perforating arteries is considered critical to prevent further visual loss. Thirty autopsy specimens, including the optic apparatus, were examined for their perforating arteries feeding the optic chiasm and optic nerves. The optic nerves and chiasmal surfaces were divided into four zones based on the presence and numbers of perforating arteries as anterior superior-posterior superior surfaces and anterior inferior-posterior inferior surfaces. The superior surface of the optic chiasm was supplied by the A1 segments of the bilateral anterior cerebral arteries and by the perforating arteries originating from the anterior communicating artery. On the other hand, the inferior surface of the optic chiasm was fed by the bilateral posterior communicating arteries and by the supraclinoidal segments of the bilateral carotid arteries. We demonstrated the anatomical involvement of a large number of nourishing arteries in feeding the optic apparatus related to the perforating arteries by classifying them into zones based on the surgical approaches, which has been rarely reported in the literature. |
| Databáze: | OpenAIRE |
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