Ankle/ talocural joint

Question 1

Name/ classification=

Answer 1

synovial hinge joint

Question 2

Movements produced at joint=

Answer 2

• Plantar flexion
• dorsi flexion

Question 3

Cartilage=

Answer 3

Hyaline cartilage at articulating surfaces reduces friction and absorbs shock

Question 4

Joint capsule=

Answer 4

• Attached to articular margins
• Fibrous capsule completely surrounds joint and attaches to posterior talofibular ligament posteriorly.
• Is attached above to borders of articular surface of tibia and malleoli and below to talus around its upper articular surface
• Thin and weak in front and behind to allow movements
• Capsule strengthened by collateral ligaments

Question 5

Synovial membrane=

Answer 5

Lines the capsule and secretes synovial fluid which nourishes cartilage, removes waste and reduces friction.

Question 6

Ligaments=

Answer 6

Medial:
- Anterior & posterior ligaments (A)
- Tibiocalcanean ligament (B)
- Tibionavicular ligament (C)
= All limit eversion

Lateral:
- Anterior and posterior talofibular ligament
- Calcaneofibular ligament

Question 7

Blood supply=

Answer 7

Branches of anterior and posterior tibial arteries

Question 8

Nerve supply=

Answer 8

Branches of deep peroneal nerve and tibial nerve.

Question 9

Muscles (flexors)=

Answer 9

Gastrocnemius
Soleus
Tibialis posterior
Flexor digitorum longus
Flexor hallucis longus

Question 10

Muscles (extensors)=

Answer 10

Tibialis anterior
Extensor digitorum longus
Extensor hallucis longus
Peroneus tertius

Question 11

Degrees of freedom & planes of movement=

Answer 11

1 degree of freedom in sagittal plane

Question 12

Bones & articulating surfaces=

Answer 12

• Distal tibia and distal fibula
• Superior talus