Clinical imaging · UKMLA & AKT
Ankle ligament sprains
A free high-yield preview for the UKMLA Applied Knowledge Test. Below are the key points to recognise ankle ligament sprains — the full SA Note notes add investigations, management, complications and 10 practice questions.
Key high-yield points
- ATFL (anterior talofibular ligament) - weakest lateral ligament; resists inversion in plantarflexion; injured in ~90% of ankle sprains
- CFL (calcaneofibular ligament) - resists inversion in neutral/dorsiflexion
- PTFL (posterior talofibular ligament) - strongest; only injured in severe/high-impact trauma
- Deltoid ligament (medial) - resists eversion; rarely injured due to inherent strength and longer lateral malleolus acting as mechanical block
- Syndesmotic ligaments - maintain ankle mortise width; injured by dorsiflexion + external rotation ('high ankle sprain')
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