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Unilateral accessory brachialis muscle and its functional significance: a case report of rare variation

  • Anatomic Variations
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Abstract

Variations of the brachialis muscle are uncommon in the literature. During regular cadaveric dissection, we observed the unilateral presence of an accessory muscle in the front of the right arm of a female cadaver, taking its origin from the medial aspect of the brachialis and the adjacent intermuscular septum. The muscle belly descended downwards, crossed the neurovascular bundle in the cubital fossa and merged with the fibres of the pronator teres. There is no doubt regarding its significance in the etiogenesis of numerous compression syndromes due to its close topographical relationship with the neurovascular bundle. In our report, we consider the potential developmental process and therapeutic implications of this variation, which can aid surgeons in their strategy and management.

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Data and material related to the report will be available with the corresponding author for further reference.

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Acknowledgements

The authors wish to express their gratitude to the families of all those who selflessly donated the bodies of their relatives for medical education and research. We also would like to acknowledge the help of attenders of department of Anatomy, AIIMS Bibinagar, Hyderabad for their efforts in maintaining the cadaveric laboratory.

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Authors and Affiliations

  1. Department of Anatomy, AIIMS Bibinagar, Hyderabad, 508126, India

    Ariyanachi Kaliappan, Rohini Motwani & Mrudula Chandrupatla

Authors
  1. Ariyanachi Kaliappan
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  2. Rohini Motwani
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  3. Mrudula Chandrupatla
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Contributions

Conceptualization: AK, RM; methodology: AK, RM; data collection: RM, AK; analysis and interpretation of results: RM, AK; writing—original draft: RM, AK; writing—review and editing: RM, AK, MC; critical revision of the manuscript: RM, AK, MC; approval of the final version of the manuscript: all authors—RM, AK, MC.

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Correspondence to Rohini Motwani.

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The authors declare that they have no conflict of interest.

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As this is a single case report that is completely on a cadaver, no ethical clearance was required as cadaver is used for teaching and research purpose.

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All the authors gave consent for the publication of the report.

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Kaliappan, A., Motwani, R. & Chandrupatla, M. Unilateral accessory brachialis muscle and its functional significance: a case report of rare variation. Surg Radiol Anat 45, 11–15 (2023). https://doi.org/10.1007/s00276-022-03053-z

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  • DOI: https://doi.org/10.1007/s00276-022-03053-z

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