Which structure provides stability against eversion of the ankle?

Which structure provides stability against eversion of the ankle?

• A. ATFL.
• B. Deltoid ligament complex.
• C. CFL.
• D. Syndesmotic ligaments.

Answer: (B)

Stability against eversion of the ankle comes mainly from the medial deltoid ligament complex. This broad, strong group of fibers on the medial malleolus resists valgus stress that would tilt the talus inward and push the foot outward, helping to keep the ankle mortise stable during eversion. In contrast, the lateral ligaments (the ones on the outside) are more involved in resisting inversion sprains, and the syndesmotic ligaments stabilize the distal tibiofibular joint rather than protecting against eversion. So the medial deltoid ligament complex best provides protection against eversion.

Stability against eversion of the ankle comes mainly from the medial deltoid ligament complex. This broad, strong group of fibers on the medial malleolus resists valgus stress that would tilt the talus inward and push the foot outward, helping to keep the ankle mortise stable during eversion. In contrast, the lateral ligaments (the ones on the outside) are more involved in resisting inversion sprains, and the syndesmotic ligaments stabilize the distal tibiofibular joint rather than protecting against eversion. So the medial deltoid ligament complex best provides protection against eversion.