Advanced Cuboid Quiz

Q1. What is a nutcracker fracture of the cuboid?

• A talar neck fracture caused only by tendon traction
• A fracture limited to the distal phalanx
• An avulsion fracture of the medial malleolus
• A compression fracture of the cuboid between adjacent lateral column bones

Q2. Why can loss of cuboid length after a fracture alter foot mechanics?

• It lengthens the tibia
• It fuses the ankle mortise
• It affects only the great toe nail
• It can shorten the lateral column and disturb alignment

Q3. Why is articular congruity important after an intra-articular cuboid fracture?

• It articulates only with soft tissue
• Its joints do not transmit force
• The cuboid has no articular surfaces
• The cuboid contributes to multiple load-bearing midfoot joints

Q4. How does the cuboid contribute to the lateral longitudinal arch?

• It supports only the talar head
• It lies outside the longitudinal arches
• It forms the medial malleolus
• It forms a central bony link between the calcaneus and lateral metatarsals

Q5. Why is the cuboid sometimes described as a functional pulley for fibularis longus?

• It contains the fibularis longus muscle belly
• Its dorsal surface inserts the calcaneal tendon
• It changes the direction of tibialis anterior
• Its plantar groove redirects the fibularis longus tendon

Q6. How can cuboid injury affect the fourth and fifth rays of the foot?

• It has no relationship to the metatarsals
• It directly dislocates the patella
• It can disturb alignment of the lateral metatarsal rays
• It affects only the first metatarsal

Q7. Why is the calcaneocuboid joint important in transverse tarsal motion?

• It is the only joint of the hindfoot
• It forms the ankle mortise
• It functions with the talonavicular joint in the transverse tarsal complex
• It directly connects the tibia and fibula

Q8. Why are the long and short plantar ligaments important around the cuboid?

• They stabilize only the great toe
• They attach the patella to the tibia
• They stabilize the plantar calcaneocuboid region and support the lateral arch
• They form the ankle mortise

Q9. Why can an isolated cuboid fracture be easy to overlook clinically?

• It is not visible on any imaging
• It lies inside the tibia
• The cuboid cannot fracture
• Its deep lateral midfoot location can make injury less obvious

Q10. Which statement best integrates the anatomy of the cuboid?

• It is a lateral midfoot tarsal that links the calcaneus to the lateral metatarsals and supports tendon guidance and arch mechanics
• It is a sesamoid embedded in the calcaneal tendon
• It is the main ankle bone articulating with the tibia
• It is a medial tarsal between the talus and first metatarsal