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Related Concept Videos

Spinal Nerves: Plexus I01:22

Spinal Nerves: Plexus I

Nerve plexuses are networks of interlacing nerves that serve as communication hubs to distribute and organize nerve action across various body regions. The nerve plexuses are organized into the cervical plexus located in the neck region, brachial plexus in the shoulder area, lumbar plexus found in the lower back, sacral plexus situated in the pelvis, and coccygeal plexus located in the coccygeal region.
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
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Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...

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Related Experiment Video

Updated: May 7, 2026

Development of a Neonatal Rat Model for Brachial Plexus Birth Injury
09:42

Development of a Neonatal Rat Model for Brachial Plexus Birth Injury

Published on: March 27, 2026

Post-traumatic brachial plexus MRI in practice.

O Silbermann-Hoffman1, F Teboul

  • 1American Hospital of Paris, 63, boulevard Victor-Hugo, 92200 Neuilly-sur-Seine, France.

Diagnostic and Interventional Imaging
|September 17, 2013
PubMed
Summary
This summary is machine-generated.

Understanding brachial plexus injuries is crucial for treatment. This study differentiates pre-ganglionic and post-ganglionic lesions using specific MRI techniques to guide surgical strategies.

Keywords:
AvulsionAxillary nerve neuromaMRINerve rupturePost-traumatic brachial plexus paralysis

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Last Updated: May 7, 2026

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Area of Science:

  • Neurology
  • Radiology
  • Neurosurgery

Background:

  • Brachial plexus injuries are categorized into pre-ganglionic (spinal nerve root avulsions) and post-ganglionic (distal ruptures).
  • Accurate diagnosis of lesion type and nerve root level is essential for effective treatment planning.
  • Identifying graftable nerve roots, like the C5, significantly impacts surgical strategy.

Purpose of the Study:

  • To elucidate the diagnostic capabilities of spinal MRI and other sequences in differentiating pre- and post-ganglionic brachial plexus lesions.
  • To emphasize the importance of identifying specific nerve root involvement and graftability for treatment.
  • To enhance understanding of post-traumatic neuronal injuries within the brachial plexus.

Main Methods:

  • Utilizing spinal Magnetic Resonance Imaging (MRI) to detect pre-ganglionic lesions, which may not present with pseudomeningoceles.
  • Employing additional MRI sequences to diagnose post-ganglionic lesions, irrespective of lesion type.
  • Correlating imaging findings with the need for nerve grafting based on lesion quality.

Main Results:

  • Spinal MRI can diagnose pre-ganglionic lesions, even without pseudomeningoceles.
  • Specific MRI sequences aid in diagnosing post-ganglionic lesions.
  • Contrast enhancement in the scalene triangle is not a reliable predictor of nerve root quality or the need for grafting.

Conclusions:

  • Differentiating between pre- and post-ganglionic brachial plexus injuries through advanced MRI techniques is vital.
  • Knowledge of nerve root status, particularly graftability, is critical for successful surgical intervention.
  • A comprehensive understanding of imaging findings aids in managing post-traumatic brachial plexus injuries.