Ankle Muscle Chart Quizlet

Gastrocnemius

O: Medial and lateral condyles of femur
I: Posterior calcaneus
A: Knee flexion and ankle plantar flexion

Soleus

O: Posterior tibia and fibula
I:Posterior calcaneus
A: Ankle plantar flexion

Plantaris

O: Posterior lateral condyle of femur
I: Posterior calcaneus
A: Weak assist in knee flexion and ankle plantar flexion

Tibialis posterior

O: Interosseus membrane, adjacent tibia and fibula
I: Navicular and most tarsals and metatarsals
A: Ankle inversion; assists in plantar flexion

Flexor hallucis longus

O: Posterior fibula and interosseus membrane
I: Distal phalanx of great toe
A: Flexes great toe; assists in inversion and plantar flexion of ankle

Flexor digitorum longus

O: Posterior tibia
I: Distal Phalanx of the lesser toes
A: Flexes the four lesser toes; assists in ankle inversion and plantar flexion of the ankle

Tibialis Anterior

O: Lateral tibia and interosseus membrane
I: First cuneiform and first metatarsal
A: Ankle inversion and dorsiflexion

Extensor hallucis longus

O: Fibula and interosseous membrane
I: Distal phalanx of the great toe
A: Extends first toe IP and MTP joints; assists in inversion and dorsiflexion

Extensor digitorum longus

O: Fibula, interosseous membrane, tibia
I: Distal phalanx of four lesser toes
A: Extends four lesser toes, assists in ankle dorsiflexion

Fibularis longus

O: Lateral proximal fibula and interosseous membrane
I: Plantar surface of first cuneiform and metatarsal
A: Ankle eversion; assists in plantar flexion

Fibularis brevis

O: Lateral distal fibula
I: Tuberosity on the base of the fifth metatarsal
A: Assists somewhat in ankle eversion and dorsiflexion

Fibularis tertius

O: Distal medial fibula
I: Tuberosity on base of fifth metatarsal
A: Assists somewhat in ankle eversion and dorsiflexion

Flexor digitorum brevis

O: Medial process of calcaneal tuberosity, plantar aponeurosis
I: Middle phalanges of digits 2-5
A: Extends PIP joints of the second through fourth digits

Abductor hallucis

O: Medial process of calcaneal tuberosity, plantar aponeurosis
I: Base of proximal phalanx of great toes
A: Abducts, flexes IP of first toe

Abductor digiti minimi

O: Medial process of calcaneal tuberosity, plantar aponeurosis
I: Base of proximal phalanx of the fifth digit and metatarsal bone
A: Flexes and abducts fifth digit

Lumbricals

O: Tendons of flexor digitorum longus
I: Medial base of proximal phalanges of 2-5
A: Flexes MPs; Extends PIPs and DIPs