Brachial Plexus Injury Categories

According to the Johns Hopkins Medicine website -

Brachial plexus injuries are categorized according to the type of trauma experienced by the nerve. The following are the types of brachial plexus injuries:

Avulsion – this means the nerve has been pulled out from the spinal cord and has no chance to recover.

Rupture – this means the nerve has been stretched and at least partially torn, but not at the spinal cord.

Neurapraxia – this means the nerve has been gently stretched or compressed but is still attached (not torn) and has excellent prognosis for rapid recovery

Axonotemesis – this means the axons (equivalents of the copper filaments in an electric cable) have been severed. The prognosis is moderate.

Neurotemesis – this means the entire nerve has been divided. The prognosis is very poor.

Neuroma – this refers to a type of tumor that grows from a tangle of divided axons (nerve endings), which fail to regenerate. The prognosis will depend on what percentage of axons do regenerate.

Source - http://www.hopkinsmedicine.org/neurology_neurosurgery/centers_clinics/peripheral_nerve_surgery/conditions/brachial_plexus_injury_bpi.html

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