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Unilateral Variation of the Median Nerve in a Human Cadaver’s Arm

  • Anatomy & Biological Anthropology
  • Abbr : Anat Biol Anthropol
  • 2024, 37(1), pp.45~48
  • DOI : 10.11637/aba.2024.37.1.45
  • Publisher : 대한체질인류학회
  • Research Area : Medicine and Pharmacy > Anatomy
  • Received : February 22, 2024
  • Accepted : March 14, 2024
  • Published : March 31, 2024

Hyeon Seung Song 1 Minseo Kim 1 Sang-Pil Yoon 1 Jinu Kim 1

1제주대학교

Accredited

ABSTRACT

Despite numerous reports highlighting variations in the formation and branching of the brachial plexus, limited familiarity persists among physicians, residents, and medical students. This case presents a unilateral anatomical variation discovered during routine educational dissection. In the right arm, the median nerve, instead of the musculocutaneous nerve, exclusively innervated the biceps brachii and brachialis muscles. The absence of the musculocutaneous nerve in this scenario represents a noteworthy anatomical aberration. These variations in the formation, location, and course of the brachial plexus may be attributed to an abnormal embryological relation. This case contributes to the growing understanding of brachial plexus variations, emphasizing their clinical relevance in accurate diagnosis and treatment planning.

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