Garza-Talamas LM, Salas-Galicia JE, Pineda-Cásarez F, Ramos-Félix D

Language: Spanish
References: 10
Page: 187-194
PDF size: 416.86 Kb.

ABSTRACT

Background: Even though there are multiple studies conducted on the anatomy of the maxillary artery, none of them has addressed the relationship between a loop type configuration of the third portion of the artery and its position according to the inferior head of the lateral pterygoid muscle. Because a loop type configuration can be determined with the use of CT/MRI angiography, its presence could be used as a reliable indicator of their relationship on a preoperative basis, resulting in a better surgical plan that aims to control the vessel.
Objective: To determine the relationship between a loop type configuration of the third portion of maxillary artery and its position according to the inferior head of the lateral pterygoid muscle.
Material and method: A descriptive transversal study in cadaver head specimens, with the use of a total of 23 hemi-heads of Latin American origin, in witch de second and third portions the maxillary artery where dissected trough and endoscopic transmaxillary approach to the pterygopalatine and infratemporal fossa.
Results: A total of 23 maxillary arteries where dissected, of which 7 arteries (30.4%) were found to be superficial to the inferior head of the lateral pterygoid muscle and 16 (69.6%) were found to lie deep to the inferior head of the muscle. A total of 16 arteries (69.5%) were found on a loop type configuration, and 7 (30.5%) with an ascending configuration. The loop type configuration was found to lie deep in 13 (81.3%) of the cases and superficial in 3 (18.8%) of them. The results where analyzed with Fisher exact test with a significance of .091.
Conclusions: This study shows a tendency in the Latin American population to have deep lying maxillary arteries in the type loop configuration, which empathizes the need to stay close to the pterigomaxillary fissure during surgical dissection when aiming to find the main trunk of this vessel in its transition point between its second and third portions.

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