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Muscles: foot/ankle
Lippert - ch. 20 foot & ankle muscles
Question | Answer |
---|---|
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 |