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