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Brachial plexus anatomy.

Charles F Leinberry1, Marwan A Wehbé

  • 1Orthopaedic Surgery, Jefferson Medical College, Philadelphia, PA, USA. cleinberry@pahandcenter.com

Hand Clinics
|March 10, 2004
PubMed
Summary
This summary is machine-generated.

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The brachial plexus, a network of nerves, originates from C5-T1 spinal nerves and forms five terminal nerves. Its complex structure of trunks, divisions, and cords can present anatomical variations.

Area of Science:

  • Anatomy
  • Neuroscience
  • Human Physiology

Background:

  • The brachial plexus is a complex network of nerves essential for upper limb function.
  • Understanding its intricate structure is crucial for clinical diagnosis and surgical procedures.
  • Variations in brachial plexus anatomy are common and can complicate medical interventions.

Purpose of the Study:

  • To provide a simplified yet comprehensive overview of brachial plexus anatomy.
  • To clarify the sequential formation of brachial plexus components from roots to terminal nerves.
  • To highlight the common anatomical variations encountered in the brachial plexus.

Main Methods:

  • Descriptive anatomical review.
  • Systematic tracing of nerve pathways from origin to termination.

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  • Identification of key anatomical landmarks and branching patterns.

    • Main Results:

    • The brachial plexus originates from the anterior rami of C5, C6, C7, C8, and T1 spinal nerves.
    • It forms three trunks, three divisions, and three cords, ultimately branching into five major nerves: musculocutaneous, median, ulnar, axillary, and radial.
    • Frequent variations in the length and caliber of brachial plexus components exist.

    Conclusions:

    • The brachial plexus follows a predictable, albeit complex, anatomical pathway.
    • Awareness of its structure and common variations is vital for healthcare professionals.
    • This simplified visualization aids in understanding brachial plexus neuroanatomy.