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Muscles: foot/ankle

Lippert - ch. 20 foot & ankle muscles

QuestionAnswer
gastrocnemius: ORIGIN medial & lateral condyles of femur
gastrocnemius: INSERTION posterior calcaneus
gastrocnemius: ACTION knee flexion; ankle plantar flexion
gastrocnemius: NERVE tibial nerve (S1,S2)
soleus: ORIGIN posterior tibia & fibula
soleus: INSERTION posterior calcaneus
soleus: ACTION ankle plantar flexion
soleus: NERVE tibial nerve (S1,S2)
plantaris: ORIGIN posterior lateral condyle of femur
plantaris: INSERTION posterior calcaneus
plantaris: ACTION weak assistance in knee flexion & ankle plantar flexion
plantaris: NERVE tibial nerve (L4,L5,S1)
tibialis posterior: ORIGIN interosseous membrane, adjacent tibis & fibula
tibialis posterior: INSERTION navicular & most tarsals & metatarsals
tibialis posterior: ACTION ankle inversion ; assists in plantar flexion
tibialis posterior: NERVE tibial nerve (L5,S1)
flexor hallucis longus: ORIGIN posterior fibula & interosseous membrane
flexor hallucis longus: INSERTION distal phalanx of great toe
flexor hallucis longus: ACTION flexes great toe; assists in inversion & plantarflexion of ankle
flexor hallucis longus: NERVE tibial nerve (L5, S1,S2)
flexor digitorum longus: ORIGIN posterior tibia
flexor digitorum longus: INSERTION distal phalanx of 4 lesser toes
flexor digitorum longus: ACTION flexes the 4 lesser toes; assists in ankle inversion & plantarflexion
flexor digitorum longus: NERVE tibial nerve (L5, S1)
tibialis anterior: ORIGIN lateral tibia & interosseous membrane
tibialis anterior: INSERTION 1st cuneiform & 1st metatarsal
tibialis anterior: ACTION ankle inversion & dorsiflexion
tibialis anterior: NERVE deep peroneal nerve (L4, L5, S1)
extensor hallucis longus: ORIGIN fibula & interosseous membrane
extensor hallucis longus: INSERTION distal phalanx of great toe
extensor hallucis longus: ACTION extends 1st toe; assists in ankle inversion & dorsiflexion
extensor hallucis longus: NERVE deep peroneal nerve (L4, L5, S1)
extensor digitorum longus: ORIGIN fibula, interosseous membrane, tibia
extensor digitorum longus: INSERTION distal phalanx of 4 lesser toes
extensor digitorum longus: ACTION extends 4 lesser toes, assists in ankle dorsiflexion
extensor digitorum longus: NERVE deep peroneal nerve (L4, L5, S1)
peroneus longus: ORIGIN lateral proximal fibula & interosseous membrane
peroneus longus: INSERTION plantar surface of 1st cuneiform & metatarsal
peroneus longus: ACTION ankle eversion; assists in ankle plantar flexion
peroneus longus: NERVE superficial peroneal nerve (L4, L5, S1)
peroneus brevis: ORIGIN lateral distal fibula
peroneus brevis: INSERTION base of 5th metatarsal
peroneus brevis: ACTION ankle eversion; assists in plantar flexion
peroneus brevis: NERVE superficial peroneal nerve (L4, L5, S1)
peroneus tertius: ORIGIN distal medial fibula
peroneus tertius: INSERTION base of 5th metatarsal
peroneus tertius: ACTION assists somewhat in ankle eversion & dorsiflexion
peroneus tertius: NERVE deep peroneal nerve (L4, L5, S1)
Which peroneous muscle is not present in all people? Peroneus tertius
Created by: jteich