A cadaveric pictorial essay mapping the anatomy of the ankle ligaments in three functional groups. It covers the lateral collateral complex, the medial (deltoid) ligament, and the tibiofibular syndesmosis. The goal is to provide an anatomic foundation for diagnosing and treating ankle ligament injury.
When a patient rolls the ankle into inversion, the ATFL fails first. Remember it tightens in plantar flexion, which is exactly the position the foot is in during a typical inversion sprain. The CFL is the structure that matters for subtalar stability because it is the only ligament crossing both joints. A combined ATFL/CFL tear (about 20% of injuries) means both ankle and subtalar laxity.
Mechanism predicts pathology: inversion hits the lateral ligaments, eversion the deltoid, hyperdorsiflexion the syndesmosis. Use this to direct your exam and imaging.
For the resident facing chronic anterolateral ankle pain after a sprain with a stable joint and normal films, think Bassett ligament impingement. Arthroscopic resection of that distal AITFL fascicle relieves symptoms without destabilizing the ankle.
A cadaveric pictorial essay mapping the anatomy of the ankle ligaments in three functional groups. It covers the lateral collateral complex, the medial (deltoid) ligament, and the tibiofibular syndesmosis. The goal is to provide an anatomic foundation for diagnosing and treating ankle ligament injury.
When a patient rolls the ankle into inversion, the ATFL fails first. Remember it tightens in plantar flexion, which is exactly the position the foot is in during a typical inversion sprain. The CFL is the structure that matters for subtalar stability because it is the only ligament crossing both joints. A combined ATFL/CFL tear (about 20% of injuries) means both ankle and subtalar laxity.
Mechanism predicts pathology: inversion hits the lateral ligaments, eversion the deltoid, hyperdorsiflexion the syndesmosis. Use this to direct your exam and imaging.
For the resident facing chronic anterolateral ankle pain after a sprain with a stable joint and normal films, think Bassett ligament impingement. Arthroscopic resection of that distal AITFL fascicle relieves symptoms without destabilizing the ankle.