Posterior Leg OIAI

gastrocnemius origin - lateral head

Superior to lateral condyle of femur

gastrocnemius origin - medial head

Superior to medial condyle of femur

gastrocnemius insertion

Posterior surface of calcaneus via calcaneal tendon

gastrocnemius innervation

Tibial

gastrocnemius action

Flexes leg, plantarflexes foot

soleus origin

Posterior surface of fibula, soleal line of tibia

soleus insertion

Posterior surface of calcaneus via calcaneal tendon

soleus innervation

Tibial

soleus action

Plantarflexes foot

plantaris origin

Lateral supracondylar line of femur

plantaris insertion

Posterior surface of calcaneus via calcaneal tendon

plantaris innervation

Tibial

plantaris action

Flexes leg, plantarflexes foot

popliteus origin

Lateral epicondyle of femur, lateral meniscus

popliteus insertion

Superior to soleal line of tibia

popliteus innervation

Tibial

popliteus action

Flexes leg, medially rotates leg

flexor hallucis longus origin

Posterior surface of fibula

flexor hallucis longus insertion

Distal phalanx of digit 1

flexor hallucis longus innervation

Tibial

flexor hallucis longus action

Plantarflexes foot, flexes digit 1 at IP and MTP joints

flexor digitorum longus origin

Posterior surface of tibia

flexor digitorum longus insertion

Distal phalanges of digits 2-5

flexor digitorum longus innervation

Tibial

flexor digitorum longus action

Plantarflexes foot, flexes digits 2-5 at MTP and IP joints

tibialis posterior origin

Posterior surface of fibula, posterior surface of tibia

tibialis posterior insertion

Medial & intermediate & lateral cuneiform, cuboid, navicular, bases of metatarsals 2-4

tibialis posterior innervation

Tibial

tibialis posterior action

Plantarflexes and inverts foot