CAUSES OF NEUROPRAXIA, AXONOTMESIS AND NEUROTMESIS Flashcards

1
Q

Mild compression injury (e.g. Saturday night palsy and other entrapment neuropathies) leading to mechanical deformation of the nerve and/or ischemia.

A

NEUROPRAXIA

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2
Q

Often transient resulting in short-term disruption of conduction

A

NEUROPRAXIA

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3
Q

May involve mild damage to myelin sheath resulting in numbness, paresis from slower conduction (e.g. mild or early CTS)

A

NEUROPRAXIA

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4
Q

Can be a result of a more severe impact or a stronger/more sustained compressive situation; can be caused by neuritis, infections (e.g. Lyme disease, toxins, GBS, diabetes related ischemia.

A

AXONOTMESIS

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5
Q

Can also occur when the nerve is stretched (without damage to the epineurium).

A

AXONOTMESIS

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6
Q

Severance injuries (knife blade injuries/cuts, displacing fractures) and ruptures/traction injuries; also, amputations, crush injuries – industrial accidents, MVAs that do not leave viable distal segments

A

NEUROTMESIS

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7
Q

Includes damage to endoneurium, perineurium and in the most severe cases the epineurium

A

NEUROTMESIS

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