W27-L7: Tibiofibular and ankle joints

Question 1

What are some features of the tibia?

Answer 1

• condyles
• tibial tuberosity
• soleal line (where soleus attaches)
• medial malleolus

Question 2

What are some features of the fibula?

Answer 2

• Head
• Shaft
• Lateral malleolus

Question 3

What is the role of the tibia and the fibula?

Answer 3

Tibia is for weight bearing and muscles, fibula is non weight bearing, 9 muscles attach here

Question 4

What are the tibiofibular joints?

Answer 4

• Superior is plane synovial joint allows some gliding movement
• Inferior is fibrous joint, syndesmosis

Question 5

What is the only bone that articulates with the tibia?

Answer 5

Talus

Question 6

What is a march fracture?

Answer 6

2nd metatarsal fracture

Question 7

What are the joints around the talus?

Answer 7

Above: Ankle joint
Below: Subtalar joint
In front: Midtarsal joint

Question 8

Which malleous extends further down?

Answer 8

Lateral (on fibula)

Question 9

What supports the talocrural (ankle) joint from behind?

Answer 9

Ligaments

Question 10

In what position is the talocrural joint most stable?

Answer 10

Dorsiflexion as talus is wider anteriorly than in posteriorly

Question 11

What are the ligaments of the ankle joint?

Answer 11

Medial-very strong
Lateral-commonly injured
Anterior-commonly injured

Question 12

What ligament is associated with the subtalar joint?

Answer 12

Spring ligament

Question 13

What joint is functionally paired with the subtalar joint?

Answer 13

talocalcaneonavicular joint

Question 14

What is the sinus tarsi?

Answer 14

gap between subtalar and talocalcaneonavicular joint