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