Tibial & Fibular Muscles Flashcards
Plantaris
O:Lateral supracondylar ridge femur
I: Posterior surface calcaneus via Achilles tendon
N: Tibial Nerve (L5,S1)
A: Plantar flexion, flexion knee
Popliteus
O: Lateral surface lateral condyle femur, lateral miniscus
I: Posterior surface tibia superior to soleal line
N: Tibial Nerve (L5,S1)
A: Flexion, unlocks knee
Gastrocnemius
O: LH: Lateral condyle femur
MH: Medial condyle femur
I: Posterior surface calcaneus via Achilles tendon
N: Tibial nerve (S1,S2)
A: Plantarflex, flex knee
Soleus
O: Posterior fibular head, superior 1/4 posterior fibula, soleal line, medial border tibia
I: Posterior surface calcaneus via Achilles tendon
N: Tibial Nerve (S1,S2)
A: Plantar Flex
Tibialis Posterior
O: Interosseous membrane, posterior tibia inferior to soleal line, posterior fibula
I: Navicular tuberosity, all cuneiforms, cuboid, base of 2-4 metatarsals
N: Tibial Nerve (L5,S1)
A: Plantarflex, inversion ankle
Tibialis Anterior
O: Lateral condyle tibia, Superolateral tibia, interosseous membrane
I: Medial cuneiform, base of 1st metatarsal
N: Deep fibular nerve (L4,L5,S1)
A: Dorsiflex, inversion ankle
Flexor Digitorum Longus
O: Posterior surface tibia inferior to soleal line
I: Bases of distal phalanges digits 2-5
N: Tibial nerve (L5,S1)
A: Flex 2-5 digits, plantarflexion
Flexor Hallucis Longus
O: Inferior 2/3 posterior fibula, inferior interosseous membrane
I: Base of distal phalanx of great toe
N: Tibial nerve (L5,S1)
A: Flex toe, plantarflex
Peroneus Longus
O: Head, superior 2/3 lateral surface fibula
I: Base of 1st metatarsal, medial cuneiform
N: Superficial fibular nerve (L4,L5,S1)
A: Eversion, plantarflexion
Peroneus Brevis
O: Inferior 2/3 lateral surface fibula
I: Tuberosity of 5th metatarsal
N: Superficial fibular nerve (L4, L5, S1)
A: Eversion, Plantarflex
Peroneus Tertius
O: Inferior 1/3 anterior surface fibula, interosseous membrane
I: Dorsum of base 5th metatarsal
N: Deep fibular nerve (L4,L5,S1)
A: Dorsiflex, eversion
Extensor Digitorum Longus
O: Lateral condyle tibia, superior 3/4 medial surface fibula, interosseous membrane
I: Middle and distal phalanges digits 2-5
N: Deep fibular nerve (L4, L5, S1)
A: Dorsiflex, ext digit 2-5
Extensor Hallucis Longus
O: Anterior surface fibula, interosseous membrane
I: Base of distal phalanx toe
N: Deep fibular nerve (L4, L5,S1)
A: Dorsiflex, ext toe
