Low Legs Flashcards
Triceps sura
Gastrocnemius plus soleus
Gastrocnemius
O: 1) medial and 2) lateral condyles of femur I: calcaneus via Achilles' tendon A: plantar flexion and knee flexion N: tibial Blood: popliteal
Soleus
O: soleal line of tibia and head and prox 1/3 of fibula I: calcaneus via Achilles A: plantar flexion N: tibial Blood: popliteal
Plantaris
O: postero-lateral condyle of femur and distal lateral supracondylar line of femur I: posterior calcaneus. Maybe Achilles A: plantar flexion N: tibial Blood: popliteal
How many muscles attach to the Talus?
None
Popliteus
O: lateral aspect of lateral condyle of femur
I: medial proximal tibia
A: medial rotation of tibia at knee; knee flexion. SCREW HOME
N: tibial
Blood: popliteal
Tibialis posterior
O: proximal 2/3 tibia, fibula and interosseus membrane
I: plantar surface of metatarsals 2-4 and all tarsals except tarsus. NAVICULAR
A; plantar flexion; inversion
N: tibial
Blood: post tibial
Flexor digitorum longus
O: middle 1/3 posterior tibia
I: plantar surface of distal phalanges 2-5. (Tendons go through fork of FDB)
A: flexion of toes @ MTP PIP DIP; plantar flexion; inversion
N: tibial
Blood: posterior tibial
Flexor hallucis longus
O: distal 2/3 of posterior fibula and interosseus membrane
I: distal phalanx of #1
A: flexion of 1st digit at MTP IP; plantar flexion; inversion
N: tibial
Blood: post tibial
Tibialis anterior
O: proximal anterior tibia (lat tibial condyle and prox 2/3 interosseus membrane and tibia) I: 1st metatarsal and 1st cuneiform A: dorsiflexion and inversion N: deep fibular Art: anterior tibial
Extensor hallucis longus
O: middle anterior fibula (mid 1/3 fib and inteross)
I: dorsal surface big toe
A: extends big toe at MCP & IP; dorsiflexion; inversion
N: deep fibular
Art: anterior tibial
Extensor digitorum longus
O: prox 2/3 ant fibula, prox 1/3 inteross; lateral tibial condyle
I: dorsal surfaces of toes #2-5. Mid and distal phalanges via DDE
A: extends toes 2-5 @ MTP and PIP and DIP
N: deep fibular
Art: anterior tibial
Fibularis tertius
O: distal ant 1/3 fibular and inteross I: dorsal 5th metatarsal A: dorsiflexion and eversion N: deep fibular Art: anterior tibial
Fibularis longus
O: head of fibula and prox 1/2 lateral fibula
I: plantar 1st cuneiform and 1st metatarsal (hooks around cuboid)
A: eversion; plantar flexion
N: superficial fibular
Art: fibular
Fibularis brevis
O: distal 1/2 lateral fibula I: lateral base of 5th metacarpal A: eversion and plantar flexion N: superficial fibular Art: fibular
What innervates the superficial posterior compartment of the low leg?
Tibial nerve
What innervates the deep posterior compartment of the low leg?
Tibial
What artery feeds the superficial posterior compartment of the low leg?
Popliteal
What artery feeds the deep posterior compartment of the low leg?
Posterior tibial
What innervates the anterior compartment of the low leg?
Deep fibular nerve
What innervates the lateral compartment of the low leg?
Superficial fibular nerve
What artery feeds the anterior compartment of the low leg?
Anterior tibial artery
What artery supplies the lateral compartment of the low leg?
Fibular