Question:medium
A girl presented with foot injury and gave history of forceful eversion of foot. Which of the following structure is affected the most?
A girl presented with foot injury and gave history of forceful eversion of foot. Which of the following structure is affected the most?
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Eversion injury affects the deltoid ligament; inversion injury commonly affects lateral ankle ligaments.
Updated On: May 14, 2026
- Anterior talofibular ligament
- Deltoid ligament
- Posterior talofibular ligament
- Calcaneofibular ligament
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Question:
The patient has suffered an injury strictly due to "forceful eversion" of the foot.
We must determine which ligamentous structure stabilizes the medial side of the ankle and is stretched during eversion.
Step 2: Detailed Explanation:
Ankle Ligament Complexes: The ankle joint is stabilized by lateral ligaments (ATFL, CFL, PTFL) and a medial ligament (Deltoid ligament).
Mechanism of Inversion Injuries: This is the most common ankle sprain where the foot rolls inward. This mechanism stretches the lateral ligaments. The Anterior Talofibular Ligament (ATFL) is most commonly torn.
Mechanism of Eversion Injuries: This occurs when the foot is forcefully rolled outward. This mechanism puts intense tension on the medial structures of the ankle.
Anatomy of the Deltoid Ligament: The medial ligament is a very strong, fan-shaped structure called the Deltoid ligament. It consists of superficial and deep components connecting the medial malleolus to the talus, calcaneus, and navicular bones.
Severity of Eversion Injuries: Because the deltoid ligament is so strong, eversion injuries often result in an avulsion fracture of the medial malleolus rather than a pure ligamentous tear. However, when the ligament is the primary site of soft-tissue failure, it is the structure "affected the most".
Analyzing Options: Options (A), (C), and (D) are all lateral ligaments. Only (B) is medial and thus relevant to an eversion injury.
Step 3: Final Answer:
A forceful eversion mechanism primarily stresses and damages the medial collateral ligament of the ankle, known as the deltoid ligament.
The patient has suffered an injury strictly due to "forceful eversion" of the foot.
We must determine which ligamentous structure stabilizes the medial side of the ankle and is stretched during eversion.
Step 2: Detailed Explanation:
Ankle Ligament Complexes: The ankle joint is stabilized by lateral ligaments (ATFL, CFL, PTFL) and a medial ligament (Deltoid ligament).
Mechanism of Inversion Injuries: This is the most common ankle sprain where the foot rolls inward. This mechanism stretches the lateral ligaments. The Anterior Talofibular Ligament (ATFL) is most commonly torn.
Mechanism of Eversion Injuries: This occurs when the foot is forcefully rolled outward. This mechanism puts intense tension on the medial structures of the ankle.
Anatomy of the Deltoid Ligament: The medial ligament is a very strong, fan-shaped structure called the Deltoid ligament. It consists of superficial and deep components connecting the medial malleolus to the talus, calcaneus, and navicular bones.
Severity of Eversion Injuries: Because the deltoid ligament is so strong, eversion injuries often result in an avulsion fracture of the medial malleolus rather than a pure ligamentous tear. However, when the ligament is the primary site of soft-tissue failure, it is the structure "affected the most".
Analyzing Options: Options (A), (C), and (D) are all lateral ligaments. Only (B) is medial and thus relevant to an eversion injury.
Step 3: Final Answer:
A forceful eversion mechanism primarily stresses and damages the medial collateral ligament of the ankle, known as the deltoid ligament.
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