The lateral ligament complex of the ankle consists of the anterior talofibular ligament (ATFL), calcaneofibular ligament (CFL), and posterior talofibular ligament.
This ligament plays an important role in limiting anterior displacement, internal rotation of the talus, and plantar flexion of the ankle
The anterior talofibular ligament extends from the anterolateral malleolar tip to the talar neck, stabilizing the talus.
At MR imaging, the normal ATFL is homogeneous of low signal intensity on T1-weighted, T2-weighted, and PD- weighted pulse sequences, and uniform thickness.
And this ATFL is often seen on a single axial image with the ankle in neutral flexion.
In fact, the anterior talofibular ligament (ATFL) is composed of the superior (S-ATFL) and inferior fascicle (I-ATFL).
The posterior talofibular is the least frequently injured of three lateral complex ligaments, extending from the posterior talus (lateral tubercle) to the fibular malleolar fossa.
The posterior talofibular often appears striated on MRI because of its fibrofatty composition.
Due to the multifascicular aspect of this ligament, it inserts not just in a specific area.
Fibers insert in the posterior surface of the talus, in the lateral talar process or os trigonum, if present.
Sagittal acquisitions can also be helpful in the evaluation of the proximal fibers.
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#ligament, #Anatomy, #ATFL, #PTFL, #ankleligament,
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