these ligaments, in conjunction with the interosseous membrane, prevent lateral displacement of the fibula and lateral drift of the talus during dorsiflexion
usually accompanies severe injury to the ankle, often with fracture
treatment involves stabilisation of the tibia and fibula by a screw from one bone to the other
lateral ligaments:
the lateral ligaments consist of three parts, any one of which can be damaged by sprains, but especially inversion injuries
compromised lateral ligaments permit the talus to move relative to the tibia and fibula, possible resulting in chronic instability
operative repair is not performed acutely in the UK
late repair repair is not possible - the usual treatment being tenodesis e.g. the Dilwyn-Evans procedure
medial ligaments:
the fan-shaped medial deltoid ligaments are far stronger than their lateral counterparts, hence stress here tends to pull the medial malleolus off of the shaft of the tibia
reduction of the ligament and bone may be required
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