W6- Ankle/Foot Radiological Evaluation

Question 1

• What is a C-sign?
• What view is it seen in?
• What is it indicative of?

Answer 1

• Continuous, C-shaped line that extends from the talus to the sustentaculum tali.
• Lateral view
• Indicative of tarsal coalition.

Question 2

No arch at the foot can be indicative of what?

Answer 2

• plantar fasciitis

- posterior tib tensile load from collapsing arch

Question 3

What is the difference between uni, bi, and trimalleolar fractures?

Answer 3

• Uni = One malleolus
• Bi = Both malleolus
• Tri = Both malleolus and posterior rim of tibia

Question 4

What are the Ottowa Ankle Rules? (2)

Answer 4

Malleolar Zone

• Tenderness at medial malleolus
• Tenderness at lateral malleolus
• Inability to bear weight immediately and in the ED for 4 steps

Midfoot Zone

• -Tenderness at base of 5th metatarsal
• Tenderness at navicular
• Inability to bear weight immediately and in the ED for 4 steps

ACR includes tenderness at talus and calcaneus