Just as compression on the sciatic nerves leads to radiculopathy and neuropathic pain, the brachial plexus can be under pressure to. For instance as the thoracic outlet syndrome, or a cervical hernia. All these compression pain syndromes can be treated with palmitoylethanolamide.
This is analogous to the fuse box in your house, distributing electricity from the main electric cable to all of your individual appliances/outlets):
Or a highway interchange which can route cars off an interstate to multiple local roads:
This is a real human brachial plexus:
However, in clinical practice, we are usually dealing with closed (traction) injuries to the plexus, so we are not too concerned about actual anatomy.
We are more interested in figuring out where the lesion lies within the plexus based on the patient’s clinical deficit.
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