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Inicio Acta Otorrinolaringológica Española The tortuous course of the anterior ethmoidal artery in the orbit: A cadaveric s...
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Original article
Available online 3 March 2024
The tortuous course of the anterior ethmoidal artery in the orbit: A cadaveric study
El curso tortuoso de la arteria etmoidal anterior en la órbita: un estudio cadavérico
Fulya Yapraka,
Corresponding author
, Istemihan Cobana, Mehmet Asım Ozerb, Figen Govsab
a Izmir Democracy University, Faculty of Medicine, Department of Anatomy, Izmir, Turkey
b Ege University, Faculty of Medicine, Department of Anatomy, Izmir, Turkey
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Table 1. Table 1 displays the study's descriptive statistics results.
Abstract
Aim

The study aimed to define the coursing pattern of the anterior ethmoidal artery (AEA) in the orbit to minimize complications during endoscopic interventions.

Materials and methods

A total of ten formalin-fixed cadaveric halves were included in the study. Orbital regions were shown with a superior approach. The superior rectus and superior oblique muscles, as well as the connective tissue and vessels were removed to observe the path of the anterior ethmoidal artery. Measurements such as the width of the artery, the anterior-posterior length of the U formation, the length of the intraorbital part of the ophthalmic artery, and the distance of the AEA from its opthalmic origin to the anterior ethmoidal foramen were made.

Results

Ten of the AEAs originated from the ophthalmic artery. The AEA branches originated from the ophthalmic artery approximately 18.4 mm after the orbital artery entered the orbital, and the mean width of the AEAs was 0.82 mm. In seven of the total anterior ethmoidal arteries, they coursed in the intraethmoidal cavities below the cranial base. The mean distance from the origin of AEAs to the medial wall of the orbit was 4.9 mm. After leaving the ophthalmic artery, seven of the AEAs were coursing forward and turned back ('U' turn formation), which have proximately 1.5 mm in anteroposterior direction.

Conclusion

The anterior ethmoidal artery is 0.8 mm wide, originates from the distal part of the ophthalmic artery, entering the orbit after a 1.5 mm U-turn.

Keywords:
Anterior ethmoidal artery
Cadaver
Ethmoidal arteries
Ophthalmic artery
Resumen
Objetivo

El estudio tuvo como objetivo definir el patrón de recorrido de la arteria etmoidal anterior (AEA) en la órbita para minimizar las complicaciones durante las intervenciones endoscópicas.

Materiales y métodos

Se incluyeron en el estudio un total de diez mitades cadavéricas fijadas con formalina. Las regiones orbitales se mostraron con un enfoque superior. Se extirparon los músculos recto superior y oblicuo superior, así como el tejido conectivo y los vasos para observar el trayecto de la arteria etmoidal anterior. Se realizaron mediciones como el ancho de la arteria, la longitud anteroposterior de la formación en U, la longitud de la parte intraorbitaria de la arteria oftálmica y la distancia de la AEA desde su origen oftálmico hasta el agujero etmoidal anterior.

Resultados

Diez de las AEA se originaron en la arteria oftálmica. Las ramas de la AEA se originaron en la arteria oftálmica aproximadamente 184 mm después de que la arteria orbitaria entrara en la órbita, y el ancho medio de las AEA fue de 082 mm. Siete del total de arterias etmoidales anteriores, discurrían en las cavidades intraetmoidales debajo de la base del cráneo. La distancia media desde el origen de las AEA hasta la pared medial de la órbita fue de 4,9 mm. Después de abandonar la arteria oftálmica, siete de las AEA discurrían hacia adelante y hacia atrás (formación de giro en 'U'), que tienen aproximadamente 1,5 mm en dirección anteroposterior.

Conclusión

La arteria etmoidal anterior tiene 0,8 mm de ancho, se origina en la parte distal de la arteria oftálmica, ingresando a la órbita tras un giro en U de 1,5 mm.

Palabras clave:
Arteria etmoidal anterior
Cadáver
Arterias etmoidales
Arteria oftálmica

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