peripheral nerve injuries Flashcards
(24 cards)
what surrounds a periphal nerve
scwchann cells and can ceaseta a myelin shaft
fasicles are
nerve bundles covered by perineum
axons are coved by
ednoneruium
nerves are coved by
epinerum
aa do
mucles and tenon sterach
ab do
touch, pressure, sensation, vibation and joint sence
a delta do
sharpt pain, light tough and pressure
c motor nue do
dull pin, burin and achin pain
injury of compresion of nerve is called
entrapent
claccial entrapents are
capral tunnel - medail nerve at wricst
sciateica
n=moron neruoma - digal web in 2nd and 3rd web space of foot
trauma of nerve types incude
neuroapraxi
axonotmesis
neruotmeis
neurapraxis is
the nerve is streahced and leads to lachaol ischam and demaysiaa
this is resoeld with weeks or montsh
axonotmesisi is
where the endonerui is intact but higly streched
good prognsosi but long term not enough to reoise pain, hot cold, shartp and blunt
neurotmesisi is
complre nerve divion from laceratio or avulion with loss of endoneru and possyly periun and epinerum
neuromtmes the long term effects are
miswireien where motor tracks grow down sensory or vice vera
long term to heal if they heal
treatment of open nerve injuries is c
open sugery
closed nerve einres are
neuropaoas and axonmeteories
way to tell how a nerve is recoving is thoriugh
tinels sign - toap over site and ask where it can be felt, monitor progression
electrophioslogila nerve conduction studies
nerves heal at
1mm/ day
sugery for blunt injureis is -
and for sharp is
blunt w2ithin 3 weke
sshaprt within 3 days
upper motor neuron signs
reduced stane
increased tone
clonus
bainksins sign postive - ie when stoke sole of foot toes point up
no atropy
lower motor neuron signs
decraed tone, deep tendon relex, clonus, babinkis singk , atrophty
nerve gaftin
is repair where the is loss of stucure, for large nerves
