Muscles of Leg (posterior): Origin, Insertion, Action, Innervation

gastrocnemius origin

posterior aspect of medial and lateral femoral condyles

gastrocnemius insertion

calcaneal tuberosity

gastrocnemius action

plantar flexion and knee flexion

gastrocnemius innervation

tibial nerve

soleus origin

soleal line and fibular head

soleus insertion

calcaneal tuberosity

soleus action

plantar flexion

soleus innervation

tibial nerve

flexor digitorum longus origin

posterior tibia

flexor digitorum longus insertion

distal phalanges of digits 2-5

flexor digitorum longus action

plantar flexion, inversion and flex digits

flexor digitorum longus innervation

tibial nerve

flexor hallucis longus origin

midshaft of fibular

flexor hallucis longus insertion

distal phalanx of great toe

flexor hallucis longus action

plantar flexion, inversion, and great toe flexion

flexor hallucis longus innervation

tibial nerve

posterior tibialis origin

superior posterior tibia and fibular

posterior tibialis insertion

plantar surface of metatarsals 2-4

posterior tibialis action

plantar flexion and inversion

posterior tibialis innervation

tibial nerve

popliteus origin

posterior lateral condyle and lateral meniscus

popliteus insertion

posterior proximal tibia

popliteus action

unlocks knee (flexion and medial rotation)

popliteus innervation

tibial nerve