Types of Nerve Injuries
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Neurapraxia | Mildest form of injury
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| Neurapraxia | Conduction block usually due to myelin dysfunction
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| Neurapraxia | Axonal continuity conserved
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| Neurapraxia | Nerve conduction is preserved proximal and distal to the lesion
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| Neurapraxia | Nerve fibers are not damaged
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| Neurapraxia | Recovery will occur within 4-6 weeks
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| Axonotmesis | A more severe grade of injury to a peripheral nerve
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| Axonotmesis | Reversible injury to damaged fibers
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| Axonotmesis | Damage occurs to teh axons with preservation of the endoneurium (neural connective tissue sheath), epineurium, Schwann cells, and supporting structures
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| Axonotmesis | Distal Wallerian degeneration can occur
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| Axonotmesis | The nerve can regenerate distal to the site of lesion at a rate of one millimeter per day
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| Neurotmesis | The most severe grade of injury to a peripheral nerve
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| Neurotmesis | Axon, myelin, connective tissue components are all damaged or transected
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| Neurotmesis | Irreversable injury, no possibility of regeneration
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| Neurotmesis | All motor and sensory loss distal to lesion becomes permanently impaired
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