A Variant of the Deltoid Muscle and Its Clinical Implications: A Cadaveric Study

Background: The deltoid is the muscle that forms rounded contour of shoulder. Anatomically, it seems to be made up three different sets fibers. anatomical portions in which are typically divided into anterior (clavicular), mean (acromial), and posterior (spinal). Different variations have been described literature. analysis knowledge these anomalies essential for surgeons anatomists. Methods: A total 21 specimens (12 women 9 men) were used with a 10% formaldehyde solution. All dissected bilaterally (the classical dissection methodology was used). Results: In one corpse, an additional bilateral belly found. It observed this muscular related fascial tissue its fibers take origin from middle third inferomedial bands infraspinatus fascia. addition, attaches muscle. innervated by axillar nerve, lateral terminal bouquet fascicle brachial plexus. Conclusions: This new variation must considered surgeons, as well abnormal conditions terms compartment syndrome involving Therefore, consideration variant necessary correct diagnosis treatment trauma or other shoulder pathology may refractory standard treatments.