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Are there hemodynamic implications related to an axillary arch?
S Provyn1, C Balestra, A Delobel
1Department of Anatomy, Morphology and Biomechanics, Haute Ecole Paul Henri Spaak, Brussels, Belgium. steven.provyn@vub.ac.be
Clinical Anatomy (New York, N.Y.)
|October 20, 2011
Summary
The axillary arch (AA) does not significantly impact axillary artery blood flow or velocity. While some axillary vein differences were noted, the study found no functional vascular implications of the AA.
Area of Science:
- Anatomy
- Vascular Biology
- Biomedical Engineering
Background:
- The axillary arch (AA) is a supernumerary muscle with potential anatomical and clinical significance.
- Previous studies have described the AA, but in vivo data on its vascular impact is limited.
Purpose of the Study:
- To investigate the in vivo influence of the axillary arch on vascular, biometrical, and hemodynamic parameters.
- To assess potential correlations between the AA and vascular entrapment syndromes.
Main Methods:
- Echo-Doppler examination of the axillary vein and artery in 239 subjects.
- Measurement of blood flow, velocity, and vessel diameter in various arm positions (45°, 90°, 90°+ER, 120°).
- Comparison of vascular parameters between subjects with and without the axillary arch.
Main Results:
- No significant differences in axillary artery parameters between groups.
- Significant differences in axillary vein diameter and velocity were observed at 90° abduction + ER and 120° abduction.
- No significant differences in blood flow were found between groups in any position.
Conclusions:
- The axillary arch does not appear to have a functional vascular implication on the axillary artery.
- Findings suggest a need to re-evaluate hypotheses linking the axillary arch to entrapment syndromes.
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