NPTEFF Reading Week 1 Flashcards
SLR basic - sciatic and tibial nn.
hip flexion and ADD
knee extension
ankle DF
SLR2 - tibial n.
hip flexion
knee extension
ankle DF, eversion
toe extension
SLR3 - sural n.
hip flexion
knee extension
ankle DF, inversion
SLR4 - common peroneal n.
hip flexion, IR
knee extension
ankle PF, inversion
SLR5 - crossed SLR - disc hern.
hip flexion
knee extension
ankle DF
Neuropraxia
Nerve injury that causes a transient and focal loss of function (sensory or motor)
Related to compressive forces
dysfunction is rapidly reversible or can persist for weeks to months
Mildest form; positive prognosis if compression removed
Axonotmesis
focal damage to axon, myelin, varying degree of peripheral tissue
increased duration compression, crush injury, traction forces
prognosis is related to degree of connective tissue damage
axonal regrowth: 1-3 mm/day; 1 in/month
Neurotmesis
Severing of axon, myelin, connective tissue
complete LOF, requires surgery
Axonal regeneration
axons that undergo regeneration do not remyelinate to preinjury levels
impacts nerve conduction velocity, speed/coordination of movement
collateral sprouting
intact axons can pick up denervated terminal targets (muscle)
often results in switching of fiber types (type I > type II)
mononeuropathy
involvement of single nerve
mononeuropathy multiplex
involvement of 2 or more nerves without clear pattern of polyneuropathy
plexopathy
involvement of brachial or lumbosacral plexus
Exam of peripheral nerve disorders
Sensory, motor, autonomic symptoms (occurs stocking/glove pattern; hair loss, vascular changes)
Autonomic dysfunction (vasodilation and loss of vasomotor tone)
Balance and fall risk
Slump test 2 (ST2)
cervical flexion
thoracic/lumbar flexion
hip flexion and ABD
knee extension
ankle DF
bias: obturator n.