Browsing by Author "Inostroza R, Veronica"

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    Common Arterial Trunk for the Branches of the Third Portion of the Axillary Artery. Description of a Case and its Clinical Application
    (Soc. Chilena Anatomía, 2022) Farfan Cabello, Emilio Erasmo; Inzunza, Oscar; Tramolao Osses, Jaritza Andrea; Leyton Ensignia, Guillermo; Inostroza R, Veronica
    Variations of the axillary artery may have clinical implications capable of generating unexpected situations during surgical procedures of arterial reconstruction or vascular catheterization. The objective of this work was to report the finding of an anatomical variant of the axillary artery, which may have clinical and surgical implications. A descriptive study was conducted, in which a unilateral vascular variation found during a routine dissection in a right upper limb of a male cadaver was reported. From the second portion of the axillary artery originated a common arterial trunk that gave rise to the subscapular, anterior humeral circumflex, posterior humeral circumflex and deep brachial arteries. The third portion of the axillary artery did not emit branches. The common arterial trunk originated from the second portion, 62.64 mm from the beginning of the axillary artery. Its total length was 23.72 mm and its thickness was 6.1 mm. The caliber of the branches originating from the common arterial trunk was: subscapular artery 5.1 mm, anterior humeral circumflex of 1.66 mm, posterior humeral circumflex 3.18 mm and deep brachial 3.73 mm. The vascular variant detected altered the anatomical relationship of the axillary artery with the brachial plexus, generating a modification in the position of the fascicles and their terminal branches. Anatomical variations of the axillary artery are not infrequent, knowing them may be necessary during surgical procedures or anatomical dissections.
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    The Dorsoepicondylar Medial Muscle a Clinically Relevant Anatomical Variation
    (2019) Farfan C, Emilio; Inzunza H, Oscar; Echeverria M, Mark; Inostroza R, Veronica
    Anatomical variations in the axillary region do not always appear in modern human anatomy texts, which leaves the risk of diagnostic and surgical errors by doctors unaware of these variations. This work presents an anatomical variation of muscular type in the axillary region that can potentially generate clinical manifestations or iatrogenic results during surgical procedures. Routine dissection of an upper limb in a male cadaver. An atypical muscle was found in the axillary region, located at the base of the right axilla, and conformed by three muscle fascicles that give rise to a common muscular belly. The three fascicles are joined at the base of the axilla, and form a thin flat muscle 120 mm long from this join to its tendon, with a cross-section diameter of 15 mm and a thickness of 2 mm. The common belly of the muscle establishes a posterior relationship with the neurovascular elements of the axillary fossa and partially covers them. The tendon 150 mm in length originates at the level of the union of the upper and middle thirds of the aim and ends inserted in the medial epicondyle of the humerus, relating in its path with muscular and neurovascular elements of the arm. Being familiar with this variation enriches diagnostic and surgical abilities and reduces the possibility of iatrogenia in surgery of the axillary and brachial regions.