Autopsy and Case Reports
https://autopsyandcasereports.org/article/doi/10.4322/acr.2020.151
Autopsy and Case Reports
Article / Autopsy Case Report

The pectoralis quartus and chondro-epitrochlearis combined muscle variation: description and surgical relevance

Felipe Assis Costa; Josemberg da Silva Baptista

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Abstract

The authors describe a rare unilateral muscle variation in the thoracic wall combining the pectoralis quartus and chondro-epitrochlearis muscles. A routine dissection was performed in the upper right limb of a male adult cadaver with approximately 35-50 years of age, embalmed in formalin 10%. An accessory muscle, the pectoralis quartus, was identified and was associated with a tendon that was inserted in the medial humeral epicondyle, characteristic of the chondro-epitrochlearis muscle tendon. Such variations have significant clinical relevance to orthopedics, mastology, neural and vascular surgery, and other specialties, for surgical approaches in both the axillary and brachial regions.

Keywords

Anatomy, Regional, Dissection, Autopsy, Anatomic Variation

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Publication date:
04/23/2020

5ea1cd860e8825297991d3be autopsy Articles
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