Ankle Anatomy

Question 1

Gastrocnemius

Answer 1

Origin: Condyles of Femur

Insertion: Calcaneus via Calcaneal Tendon

Action: Knee - Flexion Ankle - Plantarflexion

Question 2

Soleus

Answer 2

Origin: Soleal line; proximal, posterior surface of tibia and posterior aspect of head of fibula

Insertion: Calcaneus via Calcaneal Tendon

Action: Plantarflexion

Question 3

Plantaris

Answer 3

Origin: Lateral supracondylar line of femur

Insertion: Calcaneus via Calcaneal Tendon

Action: - Weak plantar flexion, Weak knee flexion

Question 4

Popliteus

Answer 4

Origin: Lateral condyle of femur

Insertion: Proximal, posterior aspect of tibia

Action: Medially rotate a flexed knee, knee flexion

Question 5

Tibialis Anterior

Answer 5

Origin: Lateral condyle of tibia; proximal, lateral surface of tibia and interosseous membrane

Insertion: Medial cuneiform and base of 1st metatarsal

Action: Ankle Inversion, Dorsiflexion

Question 6

Peroneus(fibularis)-longus

Answer 6

Origin: Head of fibula and proximal 2/3 of lateral fibula

Insertion: Base of 1st metatarsal and medial cuneiform

Action: Eversion, Assist in plantarflexion

Question 7

Peroneus(fibularis)-brevis

Answer 7

Origin: Distal 2/3 of lateral fibula

Insertion: Tuberosity of 5th metatarsal

Action: Eversion, Assist in plantarflexion

Question 8

Tibialis Posterior

Answer 8

Origin: Proximal, posterior shafts of Tibia and Fibula; and interosseous membrane

Insertion: All 5 tarsal bones and base of metatarsals 2-4

Action: Inversion, Plantar flexion