Leg & Ankle Flashcards
Tibialis Anterior
O- anterior proximal tibia, crural fascia
I- medial cuneiform & base of 1st metatarsal
A- dorsiflexion & inversion of ankle
N- deep peroneal (fibular) nerve
Extensor Digitorum Longus
O- proximal 2/3 of fibula, interosseous membrane, lateral condyle of tibia
I- dorsal surface of digits 2-5
A- extension of digits 2-5
N- deep peroneal (fibular) nerve
Extensor Hallucis Longus
O- anterior middle 1/3 of fibula & interosseous membrane
I- base of distal phalanx of big toe
A- extension of big toe
N- deep peroneal (fibular) nerve
Fibularis (Peroneus) Tertius
O- distal 1/3 of anterior fibula
I- base of 5th metatarsal
A- dorsiflexion & eversion of foot
N- deep peroneal (fibular) nerve
Fibularis (Peroneus) Longus
O- head & proximal lateral shaft of fibula
I- medial cuneiform & base of 1st metatarsal
A- eversion & plantar flexion of foot
N- superficial peroneal (fibular) nerve
Fibularis (Peroneus) Brevis
O- distal lateral 1/2 of fibula
I- base of 5th metatarsal
A- eversion & plantar flexion of foot
N- superficial peroneal (fibular) nerve
Gastrocnemius
O- medial head: medial condyle of femur
lateral head: lateral condyle of femur
I- calcaneus
A- plantar flexion of foot
N- tibial nerve
Soleus
O- soleal line of tibia, head of fibula & posterior proximal fibula
I- calcaneus
A- plantar flexion of foot
N- tibial nerve
Plantaris
O- distal posterolateral femur
I- calcaneus
A- plantar flexion of foot
N- tibial nerve
Popliteus
O- distal posterolateral femur
I- proximal posterior tibia
A- unlocks knee from extended position
medial rotation of tibia & flexion of knee
N- tibial nerve
Tibialis Posterior
O- posterior proximal 2/3 of tibia, fibula & interosseous membrane
I- fans out over plantar surface of foot
A- plantar flexion & inversion of foot
N- tibial nerve
Flexor Digitorum Longus
O- posterior middle 1/3 of tibia
I- base of distal phalanges 2-5
A- flexion of toes 2-5
N- tibial nerve
