10. Ankle and Foot

Question 1

What part of the talus articulates in the ankle joint

Answer 1

The trochlea of the talus

Question 2

What is the weakness of the AP view and what view solves this

Answer 2

Doesn’t show the whole space of the ankle joint as the fibula head blocks a little, so the Mortise view done by small internal rotation of the foot solves this

Question 3

What is the sinus tarsi

Answer 3

A space between the talus and calcaneus at the sub talar joint

Question 4

How do you tell which side of the ankle you’re looking at on Lateral view

Answer 4

Lateral malleolus extends further inferior than medial malleolus

Question 5

What is good view for metatarsals but not good for ankle joint

Answer 5

Inferior/superior view

Question 6

Which bone do the cuneiforms articulate with : navicular or cuboid

Answer 6

navicular which articulates with talus posteriorly

Question 7

What bone does the cuboid articulate with

Answer 7

calcaneus

Question 8

How do you refer to joints between phalanges

Answer 8

Any joint with a phalanx is a phalangeal joint (PJ)

There metatarsal PJs, Proximal and Distal PJs and just Inter PJ for Hallux

Question 9

What is an avulsion fracture caused by in Tennis and where is it (could be mistaken for growth plate in child)

Answer 9

It is caused by inversion on a planted foot which pulls off the peroneus brevis from its insertion on the 5th Metatarsal styloid causing a fracture in the proximal metatarsal

Question 10

What are clues for distal tibiofibular joint dislocation

Answer 10

The syndesmosis is damaged so there is a gap between the distal tibiofibular joint. This means that widening of the lateral and medial spaces between the malleolus’ and the tarsal

Question 11

What side is dorsal on the foot

Answer 11

on the front side facing you not the ground.