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42 Cards in this Set
- Front
- Back
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Which muscle/tendon supports the medial longitudinal arch of the foot?
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tibialis anterior
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Actions of the fibularis tertius?
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dorsiflexion (also eversion)
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What are the 4 muscles of the anterior leg, and what is their main collective function?
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-tibialis anterior
-extensor digitorum longus -extensor hallucis longus -fibularis tertius all dorsiflex |
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What is the nerve supply to the anterior leg?
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deep fibular nerve
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The main action of the lateral leg muscles is to
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evert
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What are the 2 muscles of the lateral leg?
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fibularis longus
fibularis brevis (remember, fibula is lateral) |
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What lateral leg muscle/tendon supports the transverse arch of the foot?
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fibularis longus
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What is the nerve supply for the lateral leg muscles?
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superficial fibular nerve
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What is the overall action of the muscles of the posterior leg?
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plantarflexion
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The gastrocnemius is incapable of plantarflexion only when ________________.
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the knee is flexed
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What posterior leg muscle is absent in 10% of the population?
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plantaris
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What is the only available plantarflexor when the knee is flexed?
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soleus
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The soleus and gastrocnemius form the ____________ muscle.
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tricep surae
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The superficial muscles of the posterior leg insert on the ___________.
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calcaneus
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What is the nerve supply to the posterior leg muscles?
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tibial nerve
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Deep posterior leg: The ____________ muscle unlocks the extended knee joint.
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popliteus
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Which muscle/tendon supports the medial arch of the foot?
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tibialis posterior
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How do you remember the deep muscles of the posterior leg?
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Tom, Dick and Harry
Tom: Tibialis posterior Dick: Extensor digitalis longus Harry: Extensor hallucis longus and just know that the popliteus is there too |
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Muscles attach to bone by _________________.
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Sharpey's fibers
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Shin splints are caused by the irritation of ________________.
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Shapley's fibers
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The popliteal artery divides into the....
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posterior and anterior tibial arteries
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The posterior tibial artery gives off the ____________ artery to supply the lateral compartment.
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fibular (peroneal) artery
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The posterior leg/sole of the foot is innervated mainly by the _______________ nerve.
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tibial
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The anterior leg is innervated mainly by the ______________ nerve.
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deep fibular (peroneal) nerve. Remember that the sciatic nerve branches off into the tibial nerve and the common fibular nerve. The deep fibular branch innervates the anterior leg and the superficial fibular branch innervates the lateral leg
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The lateral leg is innervated mainly by the ________________ nerve.
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superficial fibular (peroneal) nerve
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The lateral sural cutaneous nerve and the sural communicating nerve come from the...
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common fibular (peroneal) nerve
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Cutaneous nerves: lateral aspect of upper leg?
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lateral sural cutaneous nerve
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Cutaneous nerves: medial aspect of leg, ankle and foot?
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saphenous nerve
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Cutaneous nerves: posterior aspect of upper leg?
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medial sural cutaneous nerve
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Cutaneous nerves: posterior lower leg and lateral aspect of ankle and foot?
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sural nerve
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Cutaneous nerves: distal third of ant. foot and dorsum of foot and toes except web between great and second toes?
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superficial fibular nerve
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The achilles tendon reflex ("ankle-jerk reflex") results in...
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plantarflexion of ankle joint
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The primary muscles involved in the achilles tendon reflex are innervated by the _____________.
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tibial nerve
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The achilles tendon reflex tests spinal nerves _____________.
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S1 to S2
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Injury of the tibial nerve results in ____________________.
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weak flexion at the knee (hamstrings are affected, but flexion is still possible due to gracilis and sartorius)
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Tibial nerve may be injured at the knee from ....
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posterior knee dislocation
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In tarsal tunnel syndrome, the _____ nerve is affected, causing ___________ of the foot.
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-tibial
-dorsiflexion/eversion |
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The most commonly injured nerve in the lower limb is the...
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common fibular (peroneal) nerve
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A fracture of the neck of the fibula can cause injury to the ________ nerve.
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common fibular (peroneal) nerve
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A fracture of the neck of the fibula can cause motor deficits in the _________ compartments of the leg.
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anterior and lateral (footdrop)...because it injures the peroneal nerve
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A fracture of the neck of the fibula can cause sensory loss in...
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anterior and lateral sides of leg, dorsum of foot/toes
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Steppage gait, waddling gait, swing-out gait are all compensatory gaits for ___________.
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foot drop
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