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Multiple arterial variations in the upper limb: description and clinical relevance
João Gabriel Alexander1, Juliana Hott de Fúcio Lizardo1, Josemberg da Silva Baptista2
1Laboratory of Applied Morphology (LEMA), Universidade Federal Do Espirito Santo, Marechal Campos, 1468 Maruipe, Vitoria, Espirito Santo, 29043-900, Brazil.
Anatomical Science International
|September 10, 2020
Summary
This study details a rare combined anatomical variation of upper limb neurovasculature. A unique brachial artery branching pattern was observed, impacting clinical and surgical practice.
Area of Science:
- Anatomy
- Surgical Anatomy
- Clinical Anatomy
Background:
- Arterial variations in the upper limb are common, but combined neurovascular variations are rare.
- Understanding these variations is crucial for anatomical dissections and clinical practice.
Purpose of the Study:
- To describe a unique combined anatomical variation involving the neurovasculature of the upper limb.
- To highlight the clinical and surgical relevance of this rare finding.
Main Methods:
- Dissection of a left upper limb from a male cadaver (age 50-60 years).
- Cadaver was fixed in 10% formalin.
- Detailed observation and documentation of arterial and nervous structures.
Main Results:
- The brachial artery terminated in the middle third of the arm, bifurcating into a nutritional branch for the biceps brachii and two main arteries.
- A "lateral brachial artery" and a "medial brachial artery" were identified, unusually crossing the cubital fossa to form the radial and ulnar arteries, respectively.
- The radial and ulnar arteries exhibited unusual anastomotic branches and an anastomotic arch around the biceps brachii tendon.
Conclusions:
- This case presents a unique and complex combined anatomical variation of the upper limb's arterial supply and associated nerves.
- Such variations have significant implications for surgeons and clinicians, necessitating careful pre-operative assessment and surgical planning.
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