Anterior talofibular ligament

The anterior talofibular ligament (ATFL) is part of the lateral collateral ligament complex of the ankle. Its role is to stabilise the talus. It is also the weakest of the lateral collateral ankle ligaments. 

The ATFL is an intra-capsular flat two-banded ligament that arises from the distal anterior tip of the lateral malleolus passing anteromedially to the lateral aspect of the talus at the talar neck. It normally measures 6-10 mm long and 2 mm thick. 

The ATFL is classically described as having two bands, but it may be a single or consisting of upto three bands. One small cadaveric study put the prevalence of a two-band ATFL at ~50% 3.

MRI
  • T1: uniformly low signal and thickness 4
  • T2: uniformly low signal and thickness 4

Lower limb anatomy
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Article Information

rID: 26925
Section: Anatomy
Tags: ankle, refs
Synonyms or Alternate Spellings:
  • Anterior talofibular ligament (ATFL)
  • Anterior talo-fibular ligament

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