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The Accessory muscles of the Axilla.
Acta Orthopaedica Belgica
|May 7, 2020
Summary
Accessory muscles in the axilla, such as variant slips from the pectoral or latissimus dorsi muscles, are common anatomical variations. Further research is needed on their innervation and kinematic influence.
Area of Science:
- Anatomy
- Surgical Anatomy
Background:
- The axilla is a critical anatomical region with significant clinical and surgical implications.
- Anatomical variations, particularly accessory muscles, are frequently observed in the axilla.
Purpose of the Study:
- To review and identify supernumerary muscles described in the axilla.
- To detail the origin and course of frequently reported variant axillary muscles.
Main Methods:
- A comprehensive literature review was conducted.
- Identified and described variant muscle slips originating from pectoral and latissimus dorsi muscles.
Main Results:
- Several supernumerary muscles have been documented in the axilla.
- Variant muscle slips from the pectoral and latissimus dorsi muscles are among the most frequently reported.
- Controversy exists regarding the phylogenetic origin of these muscles.
Conclusions:
- Accessory axillary muscles represent significant anatomical variations.
- Further investigation into the innervation and biomechanical influence of these muscles on shoulder kinematics is warranted.
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