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Related Experiment Videos

T2 contributions to the brachial plexus.

Marios Loukas1, Robert G Louis, Christopher T Wartmann

  • 1Department of Anatomical Sciences, St. George's University, School of Medicine, Grenada, West Indies. edsg2000@yahoo.com

Neurosurgery
|February 14, 2007
PubMed
Summary

This study found that all specimens had a communication between the T2 nerve and the brachial plexus, with most having extrathoracic connections. Understanding these nerve pathways is crucial for surgical procedures.

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Area of Science:

  • Anatomy
  • Surgical Anatomy
  • Neuroscience

Background:

  • Advancements in neurotization and nerve grafting necessitate detailed peripheral nerve anatomy.
  • The axilla's anatomy is described, but brachial plexus contributions from T2 are poorly understood.

Purpose of the Study:

  • To investigate extrathoracic and intrathoracic contributions to the brachial plexus from the T2 nerve.
  • To determine the frequency and patterns of these nerve communications.

Main Methods:

  • Examined the ventral primary ramus of T2 and the second intercostal nerve in 75 human cadavers (150 axillae).
  • Focused on communications between these nerves and the brachial plexus, including the intercostobrachial nerve.

Main Results:

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  • Extrathoracic communications occurred in 86% of specimens, involving the intercostobrachial nerve or its branches connecting to the medial cord, medial antebrachial cutaneous nerve, or posterior antebrachial cutaneous nerve.
  • Intrathoracic communications were found in 17.3% of specimens, originating from the ventral primary ramus of T2.
  • A complete communication between T2 and the brachial plexus was observed in 100% of specimens when considering both extrathoracic and intrathoracic pathways.

Conclusions:

  • All examined specimens demonstrated a communication pathway between the T2 nerve and the brachial plexus.
  • These findings have significant implications for understanding sensory innervation of the arm and axilla.
  • Further research into these nerve communications is recommended for clinical applications.