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20 Cards in this Set

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Nerves that contain fibers from the superior rami of the plexus (L2-L4) innervate muscles in the
anterior compartment (that act at the hip and knee joint).
Nerves that contain fibers from the inferior rami of the plexus (S1-S3) innervate muscles of
the leg (that act on ankle and foot joints)
Dermatome paresthesia at the anterior thigh
L3
Dermatone paresthesia at the medial leg
L4
Dermatome paresthesia at the anterior leg and dorsum of foot
L5
Dermatome paresthesia at the lateral foot and sole
S1
Patellar tendon reflex
L4
Achilles tendon reflex
S1
Obturator nerve comes from
L2-L4 (anterior division)
Femoral
L2-L4 (posterior division)
Common Fibular comes from roots
L4 L5 S1 S2 (posterior division)
Tibial nerve comes from roots
L4 L5 S1-S3 (anterior division)
Motor weakness with obturator lesion
adduction of thigh (affected hip flexors and hip adductors)
motor weakness with femoral lesion
extension of knee
motor weakness with common fibular lesion
foot drop (dorsiflexion, foot eversion)
motor weakness with tibial lesion
no plantar flexion or toe flexion
Pregnancy can cause compression of
L3/obturator
Psoas abscess can cause a lesion of
Femoral
Common (4) injuries to the Common Fibular nerve
1) compression at fibula neck
2) hip fracture or dislocation
3) misplaced gluteal injection
4) piriformis syndrome
Penetrating trauma to buttock or hip fracture/dislocation can cause nerve damage to
Common fibular or tibial