Tibialis Anterior

O - Proximal lateral surface of tibia, interosseous membrane

I - Medial cuneiform, base of first metatarsal

A - Invert foot, dorsiflex ankle

Tibialis Posterior

O - Proximal posterior shaft of tibia, proximal fibula, interosseous membrane

I - Navicular, cuneiform, cuboid, bases of metatarsals 2-4

A - Invert foot, plantar flex ankle

Gastrocnemius

O - Posterior condyles of femur

I - Calcaneus via calcaneal tendon

A - Flex knee, plantar flex ankle

Soleus

O - Soleal line and posterior surface of tibia, proximal, posterior surface of fibula

I - Calcaneus via calcaneal tendon

A - Plantar flex ankle

Plantaris

O - Lateral epicondyle femur

I - Cancaneus via calcaneal tendon

A - Weak plantar flexion ankle

Popliteus

O - lateral epicondyle of fevur

I - Proximal, posterior aspect tibia

A - Medially rotate flexed knee, flex knee

Peroneus Longus

O - proximal 2/3 lateral fibula

I - Base of metatarsal 1, medial cuneiform

A - Evert foot, assist plantar flexion

Peroneus Brevis

O - Distal 2/3 lateral fibula

I - Tuberosity of metatarsal 5

A - Evert foot, assist plantar flexion

Extensor Digitorum Longus

O - Proximal anterior shaft fibula, interosseous membrane

I - Middle and distal phalanges of toes 2-5

A - Extend toes 2-5, dorsiflex ankle, evert foot

Extensor Hallicus Longus

O - Middle anterior surface fibula, interosseous membrane

I - Distal phalanx toe 1

A - Extend first toe, dorsiflex ankle, evert foot

Flexor Digitorum Longus

O - Middle Posterior surface tibia

I - Distal phalanges toes 2-5

A - Flex toes 2-5, weak plantar flexion, invert foot

Flexor Hallicus Longus

O - Middle half posterior fibula

I - Distal Phalanx toe 1

A - Flex toe 1, weak plantar flexion, invert foot

Extensor Digitorum Brevis

O - Calcaneus (dorsal surface)

I - Toe 2-4 via extensor digitorum longus tendons

A - Flex toe 2-4

Flexor Digitorum Brevis

O - Calcaneus (plantar surface)

I - Middle phalanges toes 2-5

A - Flex middle phalanges toe 2-5

ABductor Hallucis

O - Calcaneus (plantar surface)

I - Medial side proximal phalange toe 1, Medial sesamoid bone

A - Abduct toe 1, assist flexion of toe 1

ABductor Digiti Minimi

O - Calcaneus (plantar surface)

I - Lateral proximal phalange toe 5

A - Flex toe 5, assist abduction toe 5