Ankle and foot muscles Flashcards
Extensor hallucis longus
Origin: medial surface of fibula, interosseous membrane
Insertion: distal phalanx of big toe
Innervation: Deep fibular nerve (L5, S1)
Extensor hallucis brevis
Origin: superolateral calcaneus
Insertion: proximal phalanx of big toe
Innervation: Deep fibular nerve (S1,S2)
Extensor digitorum longus
Origin: medial surface of fibula, lateral tibial condyle, interosseous membrane
Insertion: distal and middle phalanges of digits 2-5
Innervation: Deep fibular nerve (L5,S1)
Extensor digitorum brevis
Origin: superolateral calcaneus
Insertion: EDL tendons of digits 2-4
Innervation: Deep fibular nerve (L5, S1)
Fibularis longus
Origin: head of fibula
Insertion: medial cuneiform, MT 1
Innervation: Superficial fibular nerve (L5,S1)
Tibialis posterior
Origin: posterior surface of tibia and fibula, interosseous membrane
Insertion: Navicular, cuneiforms, cuboid, bases of MT 2-4
Innervation: tibial nerve (L4,L5)
Tibialis anterior
Origin: lateral surface of tibia, interosseous membrane
Insertion: medial cuneiform, MT 1
Innervation: Deep fibular nerve (L4, L5)
Flexor hallucis longus
Origin: posterior fibula, interosseous membrane
Insertion: distal phalanx of big toe
Innervation: Tibial nerve (S2,3)
Flexor hallucis brevis
Origin: tendon of TP, lateral cuneiform, cuboid
Insertion: proximal phalanx of big toe
Innervation: Medial plantar nerve (S1,S2)
Flexor digitorum longus
Origin: posterior tibia
Insertion: distal phalanx of digits 2-5
Innervation: tibial nerve (L5 - S2)
Flexor digitorum brevis
Origin: calcaneus, plantar aponeurosis
Insertion: middle phalanx of digits 2-5
Innervation: Medial plantar nerve (S1-3)
Gastrocnemius
Origin: lateral and medial condyle of femur
Insertion: posterior calcaneus
Innervation: tibial nerve (S1, S2)
Soleus
Origin: head of fibula, medial border of tibia
Insertion: posterior calcaneus
Innervation: tibial nerve (S1, S2)
