Muscles of the Ankle

Question 1

Answer 1

Tibialis Anterior

Origin

• Lateral Shaft of the Tibia
• Tibial Condyle
• Interosseous Membrane

Insertion

• Medial Cuneiform
• Base of the First Metatarsal

Action

• Dorsiflexion of the tibiotalar joint
• Inversion of the talocalcaneal joint

Question 2

Answer 2

Fibularis (Peroneus) Longus

Origin

• Head of the Fibula
• Proximal 2/3 of the Fibula

Insertion

• First or Medial Cuneiform
• Base of the First Metatarsal

Action

• Eversion of the talocalcaneal joint
• Assists in plantarflexion of the tibiotalar joint

Question 3

Answer 3

Soleus

Origin

• Soleal Line of the Tibia
• Head of the Fibula

Insertion

• Calcaneus via the Achilles Tendon

Action

• Plantarflexion of the tibiotalar joint

Question 4

Answer 4

Gastrocnemius

Origin

• Medial Head - Medial Epicondyle of the Femur
• Lateral Head - Lateral Epicondyle of the Femur

Insertion

• Both Heads - Calcaneus via the Achilles Tendon

Action

• Plantarflexion of the tibiotalar joint
• Assists in flexion of the femorotibial joint