The pulley structure meeting the calfbone is which anatomical feature?

The pulley structure meeting the calfbone is which anatomical feature?

• A. Fibular trochlea
• B. Tibial trochlea
• C. Humeral trochlea
• D. Medial malleolus

Answer: (A)

Pulley-like structures at the ankle redirect tendons as they pass from the leg into the foot. The fibular trochlea on the distal fibula forms a small groove that the peroneal (fibularis) tendons wrap around, acting as a pulley to change their direction as they head toward the sole and the area near the calcaneus. This specific pulley function is why this structure is the best answer. The tibial trochlea isn’t a standard pulley in the ankle, the humeral trochlea is at the elbow, and the medial malleolus is a bony landmark rather than a pulley.

Pulley-like structures at the ankle redirect tendons as they pass from the leg into the foot. The fibular trochlea on the distal fibula forms a small groove that the peroneal (fibularis) tendons wrap around, acting as a pulley to change their direction as they head toward the sole and the area near the calcaneus. This specific pulley function is why this structure is the best answer. The tibial trochlea isn’t a standard pulley in the ankle, the humeral trochlea is at the elbow, and the medial malleolus is a bony landmark rather than a pulley.