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High-Origin Radial Artery: Frequency and Morphology in Midwestern Cadaveric Specimens
Umair Naseem1, Michael Pollack1, Khalid Khan1
1Anatomy, A.T. Still University, Kirksville, USA.
Cureus
|January 16, 2026
Summary
A high-origin radial artery (RA) was found in 11.5% of brachial artery (BA) variations in Midwestern cadavers. Understanding these arterial branching anomalies is crucial for medical procedures.
Area of Science:
- Anatomy
- Vascular Biology
- Medical Imaging
Background:
- The brachial artery (BA) bifurcates into the radial artery (RA) and ulnar artery, supplying the forearm and hand.
- Anatomical variations in BA branching can impact clinical procedures.
- Standard nomenclature for arterial landmarks can be inconsistent.
Purpose of the Study:
- To determine the frequency and morphological characteristics of high-origin radial arteries (RA).
- To investigate variations in brachial artery (BA) bifurcation in Midwestern cadaveric specimens.
Main Methods:
- Evaluation of brachial artery (BA) branching in 31 Midwestern cadavers.
- Characterization of high-origin radial arteries (RA), including origin, course, and length.
- Documentation through photography.
Main Results:
- Sixty-one upper limbs were analyzed.
- Seven instances (11.5%) exhibited variations in BA bifurcation originating from the axillary artery.
- Variations were observed in both right (57.1%) and left (42.9%) limbs.
Conclusions:
- Over a tenth of brachial arteries (BA) display variations in branching patterns.
- Awareness of these anatomical variations is vital for procedures like coronary artery angiography and percutaneous interventions.
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