CALCANEOFIBULAR LIGAMENT TEAR MRI ANKLE

• The Calcaneofibular ligament is a small lateral ankle ligament that is often torn.

• Its normal MRI appearance is a thin low signal structure (Pink arrows) that extends from the calcaneum to the fibula and passes deep to the peroneal tendons (Green arrows).

The Calcaneofibular ligament is a small lateral ankle ligament that is often torn.

Here is what to look for when assessing for an acute tear of the Calcaneofibular ligament on MRI.

• Thickened, hyper-intense and ill defined calcaneofibular ligament (Pink arrows).

• This can involve the entire ligament or  a portion of it.

• The anatomical landmark to find the CFL are the Peroneal tendons (Blue arrows) with the CFL lying deep to it between the peroneal tendons and calcaneum.