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
