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11 Cards in this Set
- Front
- Back
femoral artery
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- exits the adductor hiatus to become the popliteal artery
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- popliteal artery
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- divides into anterior and posterior tibial arteries at distal edge of popliteal fossa
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anterior tibial artery
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- passes through gap in the intermuscular septum to supply the anterior compartment of the leg
- terminates in ankle as dorsalis pedis artery |
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posterior tibial artery
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- travels thorugh and supplies the posterior compartment
- terminates in ankle by dividing into lateral and medial plantar arteries - near its origin it gives rise to large branch called the fibular artery |
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fibular artery
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- remains in the posterior compartment but supplies the lateral compartment via perforating branches
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motor innervation to the leg (tibial nerve)
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- supplied entirely by the tibial and common fibular nerves
- tibial nerve runs vertically in popliteal fossa with popliteal artery and passes between the two head of the gastrocneumius - travels in posteiror compartment with the posterior tibial artery - terminates in ankle by dividing into medial and lateral plantar branches |
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common fibular nerve
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- divides into superficial and deep fibular nerves near the head of the fibula
- superficial fibular nerve travels into lateral compartment to supply the two fibularis muscles - emerges distally as cutaneous nerve supplying the skin on the distal part of the anterolateral leg and dorsum of the foot - deep fibular nerve travels with the anterior tibial artery in the anterior compartment |
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So each compartment of the leg...
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- contains a funtional group of muscles with a specific nerve and arterial supply
- all these muscles act at the talocrural joint (dorsiflextion/plantarflexion) and the subtalar joint - muscles that extend into the forefoot also function at more distal joints - some muscles in the posterior group also act to flex the leg at the knee |
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Anterior compartment
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- arterial supply = anterior tibial arteyr
- innervation = deep fibular nerve - function = all dorsiflexors of the foot anterior lateral muscles evert the foot anterior medial muscles invert the foot |
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posterior compartment
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- arterial supply = posterior tibial artery
- innervation = tibial nerve - function = all plantarflex and invert the foot |
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lateral compartment
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- arterial supply = fibular and anterior tibial artery (perforating branches)
- innervation = superficial fibular nerve - function = evert foot and plantar flex the foot |