Nerves of LE Flashcards
lat femoral cutaneous nerve
from L2-3 roots of lumbar plexus
sensation to sup external buttock and outer thigh
meralgia paresthetica
affects ant branch from compression fascia lata
dysesthisias on lat thigh
sensory loss on anteroalteral thigh from ASIS to knee
pain
femoral nerve
from L2-L4 of lumbar plexus
supplies quads, iliopsoas, pectineus and sartorius
medial side of leg and foot sensory
ssx of femoral nerve injury
weak knee ext, hip flex and add
sensory of medial thigh and calf - saphenous
quads reflex loss
sciatic nerve
from L4-S3 of lumbosacral plexus
tibial: post leg and sole foot, pflexion, knee flexion and toe flexion
common fibular/peroneal: dflexion, to ext and foot eversion and lat leg, instep and dorsum of foot and toes
sciatica
pain from low back to leg
lumbar nerve root injury from disc hern at L5-S1
total sciatic nerve injury
total paralysis of pflexion, dflexion and toe movements
foot drop
loss of ankle jerk
sensory loss in sciatic nerve injury
sensory loss on outer leg, instep, sole and dorsal foot and toes
tibial neuropathy
pflexion and inversion, toe flexion paralysis
steppage gait
gastorcs, tib post, FHL, FDP
sensory on sole, heel and plantar toes
no ankle jerk
sup gluteal nerve
L4-S1 of sacral plexus
can be sa greater sciatic forament and piriformis
weakn gmeds and minimus, trendelenburg
pain and sensory deficits
inf gluteal nerve
L5-S2
prolonged sitting, greater sciatic foramen and hip surgery
weak gmax - ext and ER
pain and no sensory
sural nerve
formed by lat cutaneous (L5-S2) and medial sural cutaneous (S1-S2)
provides sensory to posterolateral leg and lateral foot
sesnosry deficit on lat food and post calf
pain or paresthsia and pure sensory sa ankle to lateral foot
