Lower Leg Muscles

O: Medial and lateral condyles of femur

I: Posterior calcaneus

A: Knee flexion and ankle plantar flexion

Also main muscle in calf.

• Soleus

• Plantaris

• Gastrocnemius

• Tibialis Posterior

O: Posterior tibia and fibula

I: Posterior calcaneus

A: Ankle plantar flexion

Is located behind the Large calf muscle.

• Soleus

• Plantaris

• Gastrocnemius

• Tibialis Posterior

O: Posterior lateral condyle of femur

I: Posterior calcaneus

A: Very weak assist in knee flexion and ankle plantar flexion

3rd muscle in posterior compartment located behind the knee.

• Soleus

• Plantaris

• Gastrocnemius

• Tibialis Posterior

O: Posterior tibia

I: Distal phalanx of toes 2-4.

A: Flexes toes 2-4;

& assists in ankle inversion and plantar flexion of the ankle.

• Flexor Hallucis Longus

• Flexor Digitorum Longus

• Tibialis Anterior

• Extensor Hallucis Longus

O: Lateral tibia and interosseous membrane

I: First cuneiform and first metatarsal

A: Ankle inversion and dorsiflexion

Main muscle of the front compartment.

• Flexor Hallucis Longus

• Flexor Digitorum Longus

• Tibialis Anterior

• Extensor Hallucis Longus

O: Fibula and interosseous membrane

I: Distal phalanx of great toe

A: Extends 1 toe IP and MTP joints; assists in ankle inversion and dorsiflexion

• Flexor Hallucis Longus

• Flexor Digitorum Longus

• Tibialis Anterior

• Extensor Hallucis Longus

O: Lateral proximal fibula and interosseous membrane

I: Plantar surface of first cuneiform and metatarsal

A: Ankle eversion; assists in ankle plantar flexion

• Peroneal Longus

• Fibularis Brevis

• Fibularis Tertius

• Extensor Hallucis Longus

O: Lateral distal fibula

I: Tuberosity on base of fifth metatarsal

A:Ankle eversion; assists in plantar flexion

• Fibularis Longus

• Peroneal Brevis

• Fibularis Tertius

• Tibialis Posterior

O: Lateral distal fibula

I: Tuberosity on base of fifth metatarsal

A: Assists somewhat in ankle eversion and dorsiflexion

• Distal medial fibula

• Fibularis Brevis

• Peroneal Tertius

• Extensor Hallucis Longus

__________ tendon sits on the posterior of the lower leg and ankle

• Soleus

• Achilles

• Gastrocnemius

• Tibialis Anterior