Ankle joint

Question 1

Also known as..

Answer 1

Talocrural joint (hinge)

Question 2

Articulations between…

Answer 2

• the distal end of the tibia and it’s medial malleolus with the talus
• the lateral malleolus of the fibula with the talus

Question 3

Supporting structures..

Medial (deltoid) ligament

Answer 3

• attached to the medial malleolus
• consists of 4 different ligaments attaching from the malleolus, to the talus, calcaneus and navicular bones
• prevents over-eversion of the foot

Question 4

Supporting structures.. 
Lateral ligament(s) (3)

Answer 4

-Attached to lateral malleolus, resists over inversion of the foot
3 distinct separate ligaments:
1. Anterior talofibular - (lateral malleolus &lateral aspect of talus)
2. Posterior talofibular (spans between lateral malleolus & the posterior aspects of the talus)
3. Calcaneo fibular (spans netween the lateral malleolus & the calcaneous)

Question 5

Movements (2main)

Answer 5

-Plantar flexion: (muscles in posterior compartment of the leg) - gastrocnemius, soleus, plantaris, tibialis posterior

• Dorsiflexion: (anterior compartment of the leg)
• tibialis anterior, extensor hallucis longus, extensor digitorum longus

Question 6

Blood supply

Answer 6

receives blood from branches of the …

-anterior & posterior tibial arteries

Question 7

Innervation (lumbar and sacral plexuses)

Answer 7

• Tibial nerve (main branch of sciatic nerve)

- Deep and superficial nerves (branches of the common fibular)