Peripheral Nerve Injuries - p. 260-262 Flashcards
the existence of two separate lesions along the same nerve create more severe symptoms than if only one lesion existed
double crush syndrome
isolated nerve lesion, associated with trauma and entrapment
mononeuropathy
abnormal growth of nerve cells asosociated conditions include vasculitis, AIDS, and amylodosis
neuroma
impairment of dysfunction of peripheral nerves, associated conditions include diabetic peripheral neruopathy, trauma, alcoholism
peripheral neuropathy
diffuse nerve dysfunction that is symmetrical and typically secondary to pathology and not trauma; associated conditions include Guillain-Barre syndrome, peripheral neropathy, use of neurotoxic drugs and HIV
polyneuropahty
Degeneration that occurs distally, sepcfically to the myelin sheath and axon
Wallerian degeneration
What are the grades of acute nerve injury from mildest to most severe?
Neurapraxia - mild form of injury
Axonotmesis - more severe
Neurotmesis - most severe form
In what grade of peripheral nerve injury is the axon, myelin, CT components all damaged or transected?
Neurotmesis
In what grade of peripheral nerve injury is damage irreversible with no possibility of regernation?
Neurotmesis
With surgical reattachment of transected nerves how fast do axons regenerate and does motor or sensory recover first?
one milimeter per day
Sensory recovers first
With axonotmesis how fast can the distal site of lesion regnerate?
one milimeter per day
How long does it take for complete recovery from neurapraxia?
4-6 weeks