ABSTRACT
The axillary arch is a muscle slip varying from7 to 10 cm in length and 5 to 15 mm inbreadth. It occasionally arises from the edge ofthe latissimus dorsi, at about the middle ofthe posterior fold of the axilla and crosses theaxilla in front of the axillary vessels and nervesto join the under-surface of the tendon of thepectoralis major, the coracobrachialis, or thefascia over the biceps. During the dissection ofa human cadaver, an unusual muscle band wasencountered and identified as an axillary archon the right side of a 60-year old male cadaver.The anomalous muscle band was an extensionfrom the lateral border of the latissimusdorsi muscle. The muscle measured 6 cm inlength, 2 cm wide and 2 mm thick. Since thismuscle may be the cause of different pathologies,we were prompted to discuss the clinicalrelevance of our findings (AU)
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Subject(s)
Humans , Male , Middle Aged , Axilla/abnormalities , Axilla/anatomy & histology , Biometry/methods , Fascia/abnormalities , Fascia/anatomy & histology , Subcutaneous Tissue/abnormalities , Subcutaneous Tissue/anatomy & histology , Muscles/anatomy & histology , Tendons/anatomy & histology , Tendons/innervation , Dissection/methods , Cadaver , Muscles/abnormalities , Muscles/ultrastructureABSTRACT
Brachial plexus variations were encountered inthe right upper limb of an adult male cadaverduring the routine dissection course for undergraduateteaching at the Department ofAnatomy, College of Medicine, King SaudUniversity. The ventral rami of C4 and T2were shared in the formation of the variantbrachial plexus. The anterior and posteriordivisions of the upper trunk fused with themiddle trunk to form a single unit, whichdivided into anterior and posterior subdivisions.The posterior subdivision joined theposterior division of the lower trunk, formingthe posterior cord and giving off the usualbranches, while the anterior subdivisionjoined the anterior division of the lower trunkto form the anterior cord. No lateral or medialcords were found in this cadaver; only anteriorand posterior cords, according to theirrelationship with the second part of the axillaryartery. We also observed a medial pectoralnerve with two routes and the absence of amusculocutaneous nerve (AU)
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Subject(s)
Humans , Male , Adult , Brachial Plexus/abnormalities , Brachial Plexus/anatomy & histology , Thoracic Nerves/abnormalities , Thoracic Nerves/anatomy & histology , Musculocutaneous Nerve/abnormalities , Musculocutaneous Nerve/anatomy & histology , Brachial Plexus/pathology , Brachial Plexus/ultrastructure , Cadaver , Dissection/methods , Thoracic Nerves/physiopathology , Musculocutaneous Nerve/physiopathologyABSTRACT
Arterial variations in the upper limb arenumerous and may occur at the level of theaxillary, brachial, radial, and ulnar arteries andin the palmar arch as well. Two arterial variationsin a single upper limb, a brachioradialartery and a superficial median artery werefound during the routine dissection of theright upper limb of a 65 years old white malecadaver. The variant upper limb was dissectedcarefully and the preparation steps were documented.Although brachioradial artery andsuperficial median artery have been reportedin the literature, but superficial median arteryarises from the brachioradial artery is extremelyrare (AU)
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