Intermediate Extensor Hallucis Longus Quiz

Q1. Where is extensor hallucis longus positioned relative to tibialis anterior and extensor digitorum longus in much of the leg?

• Between gastrocnemius and soleus
• Between flexor hallucis longus and tibialis posterior
• Between fibularis longus and brevis
• Between tibialis anterior and extensor digitorum longus

Q2. Which spinal nerve root is especially important for the motor function tested by great toe extension?

• L5
• L1
• S2
• S4

Q3. How does the extensor hallucis longus tendon reach the dorsum of the foot?

• Behind the medial malleolus
• Through the tarsal tunnel
• Beneath the superior and inferior extensor retinacula
• Behind the lateral malleolus

Q4. Which joint of the great toe is directly extended by extensor hallucis longus in addition to the metatarsophalangeal joint?

• Calcaneocuboid joint
• Subtalar joint
• Talonavicular joint
• Interphalangeal joint

Q5. What is the relationship of the anterior tibial neurovascular bundle to extensor hallucis longus in the leg?

• It travels only within the lateral compartment
• It remains subcutaneous throughout the leg
• It lies in close relation to the muscle within the anterior compartment
• It lies entirely in the superficial posterior compartment

Q6. What happens to the anterior tibial artery after it crosses the ankle joint?

• It becomes the posterior tibial artery
• It becomes the medial plantar artery
• It becomes the fibular artery
• It becomes the dorsalis pedis artery

Q7. Why can extensor hallucis longus assist ankle dorsiflexion?

• It crosses only the toe joints
• Its tendon passes anterior to the ankle joint axis
• It inserts on the calcaneal tuberosity
• Its tendon passes behind the medial malleolus

Q8. Which muscle is the principal antagonist of extensor hallucis longus at the interphalangeal joint of the great toe?

• Tibialis anterior
• Extensor digitorum longus
• Flexor hallucis longus
• Fibularis tertius

Q9. How can the extensor hallucis longus tendon be made more visible on the dorsum of the foot?

• Ask the person to flex the knee
• Ask the person to abduct the hip
• Ask the person to plantarflex the lesser toes only
• Ask the person to extend the great toe

Q10. Which functional phase of gait particularly benefits from extensor hallucis longus dorsiflexor activity?

• Double support only
• Swing phase
• Midstance only
• Terminal stance only