Morphological evaluation of the distal medial striate artery. A study with cadaveric material.
Abstract
SUMMARY:
Background: The distal medial striated artery (DMSA) is a small, constant branch that emerges from the base of the anterior cerebral artery (ACA) and is directed backwards to irrigate internal structures such as the nucleous of the base.
Objective: This study proposes to evaluate the morphology of the DMSA, useful for clinical and surgical management that compromise this vascular structure.
Methods: The DMSA of 71 unclaimed male bodies, who underwent necropsy at the Institute of Legal Medicine and Forensic Sciences of Bucaramanga-Colombia, were evaluated using the perfusion technique of vascular structures with polyester resin. Results: The DMSA was presented in four cases (2.8%) duplicated and with agenesis in 2.1% of the hemispheres. Its origin was 43.9% of the post-communicating segment of the ACA (A2), 10.8% of the pre-communicating segment of the ACA (A1) and 44.6% of the ACA junction site with the anterior communicating artery (AComA). The diameter of the DMSA was 0.5 ± 0.2 mm and its total length was 20.3 ± 4.1 mm. Sinuous trajectory was observed in 73 cases (51.4%). There was a superolateral relationship with the ACA in 48% of the samples. The DMSA was observed in 129 cases (90.9%) as a single trunk while in 6 cases (4.2%) it presented with a common trunk with the orbitofrontal artery (OF). The completion of the DMSA in the anterior perforated substance was given by a single trunk in 129 cases (90.9%) bifurcation in 9 cases (6.3%) and trifurcation in four cases (2.8%). The incidence of sinuous presentation and hypoplasia of the DMSA is considerably higher than previously reported.
Conclussions: The importance of the DMSA lies in its involvement with the surgical procedures and interventions of the anterior segment of the arterial cerebral circle, and in the complex clinical management that determine its injury in clinical practice.
Authors
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Keywords
- medial striate artery
- anterior cerebral artery
- recurrent Heubner artery
- anterior communicating artery
- collateral circulation
- autopsy
Author Biographies
, Universidad Industrial de Santander
Physiotherapist and Master's student in Basic Biomedical Sciences. Faculty of Health. Universidad Industrial de Santander. Bucaramanga, Colombia.
https://orcid.org/0000-0002-1844-2793
, Universidad Industrial de Santander, Facultad de Salud, Departamento de Patología, Bucaramanga, Colombia
Doctor and Pathologist of the Instituto Nacional de Medicina Legal in Bucaramanga, since 2008. In the last 10 years, he has served as a fully tenured professor in the Department of Pathology at the Universidad Industrial de Santander in Bucaramanga, Colombia.
He was a research professor in the line of anatomical variations.
It is presumed that he could have been infected with covid-19 there, during a necropsy on the body of a person who died with covid-19. He died a month later from this disease in August 2020.
, Universidad Industrial de Santander, Facultad de Salud, Departamento de Ciencias Básicas, Bucaramanga, Colombia
Director of the research group “Variaciones Anatómicas y Biomecánicas Tendomuscular” of Universidad Industrial de Santander.
https://orcid.org/0000-0002-3431-3940
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Copyright (c) 2020 Natalia García, Pedro Luis Forero Porras, Luis Ernesto Ballesteros Acuña (Author)
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