- See:
EMG
- Nerve Injury Discussion:
-
neuropraxia:
- least severe injury, is characterized by a conduction block;
- continuity of all structures is preserved;
-
Wallerian degeneration does not (no axonal loss) occur but there is focal demyelination;
- complete recovery is evident in 3 to 6 weeks;
- after a simple crush injury function may return within days;
- w/ neuropraxia there is immediate conduction block across the site of injury with normal conduction distally;
- with severe trauma, there is focal demyelination w/o disruption of axons, and slowing of the conduction velocity can be demonstrated across the lesion;
- conduction block is restored once myelin regeneration is restored (taking weeks to months);
-
axonotmesis:
- is more severe injury, with disruption of axons & surrounding endoneurial sheaths;
- perineurium and epineurimum remain intact;
-
Wallerian degeneration occurs;
- after axonotmesis, conduction velocity may be preserved distally for up to 7 days;
- recovery is good but may require many months;
-
neurotmesis:
-
Wallerian degeneration occurs;
- Complications:
-
reflex sympathetic dystrophy
-
neuroma:
Erythropoietin Accelerates Functional Recovery After Peripheral Nerve Injury
Pain relief after nerve resection for post traumatic neuralgia. T. Yamashita et al. JBJS. Vol 80-B. No 3. May 1998. p 499.
Treatment of superficial and deep peroneal neuromas by resection and translocation of nerves into the anterolateral compartment.
AL Dellon and OC Aszmann. Foot and Ankle International. Vol 19. No 5. May 1998. p 300.
Treatment of the painful neuroma by neuroma resection and muscle implantation. AL Dellon and SE mackinnon. Annals of Plastic Surgery. Vol 12. 1984. p 30-40.
Neuroma transposition and intramuscular implantation using the Mitek "soft-tissue anchor": a new technique.
