Question

multiple choice question

which ligament binds the tibia to the foot on the medial side of the ankle?

deltoid ligament
tibiofibular ligament
collateral ligament
talofibular ligament

Explanation:

Identify the anatomical region and side

Using the Medial Ankle Joint knowledge point, we focus on the medial (inner) side of the ankle joint (talocrural joint), which connects the distal tibia to the tarsal bones of the foot.

Evaluate the medial ligamentous structures

Using the Medial Collateral Ligament of Ankle and Deltoid Ligament Function knowledge points, the major ligament stabilizing the medial side of the ankle is the medial collateral ligament, commonly known as the deltoid ligament. This strong, triangular ligament binds the medial malleolus of the tibia to the talus, calcaneus, and navicular bones of the foot.

Analyze the incorrect options

• Tibiofibular ligament: Connects the tibia and fibula (anteriorly and posteriorly), stabilizing the distal tibiofibular syndesmosis, not the medial ankle to the foot.
• Collateral ligament: Too generic, as there are collateral ligaments in many joints (e.g., knee, elbow, wrist).
• Talofibular ligament: Located on the lateral side of the ankle (e.g., anterior and posterior talofibular ligaments), connecting the fibula to the talus.

Answer:

• Deltoid ligament (Correct answer)
• Tibiofibular ligament
• Collateral ligament
• Talofibular ligament