Anatomy: ankle ligaments

Lateral collateral ligament:
Anterior talofibular ligament: Best visualized on axial images
Posterior talofibular ligament: Best visualized on axial images
Calcaneofibular ligament: best seen on coronal plane, extends deep to peroneal tendons, from apex of lateral malleolus to small tubercle on lateral aspect of calcaneus

Medial collateral ligament (deltoid ligament):
Superficial layer:
Tibionavicular ligament
Tibiocalcaneal ligament:
longest, 2 cm in length and 1cm wide at insertion
Tibiospring ligament
Deep layer:
Anterior talotibial ligament
- weaker, thinner
Posterior talotibial ligament - strongest of the medial collateral ligament complex

Superficial layer is traingular, where as the deep layer is rectangular.
Deep layer is intra-articular, covered by synovium

Tibiofibular ligaments:
Anterior tibiofibular ligament
Posterior tibiofibular ligament

Muhle C et al. Collateral Ligaments of the Ankle: High-Resolution MR Imaging with a Local Gradient Coil and Anatomic Correlation in Cadavers. Radiographics. 1999;19:673-683