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

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

• S2
• L1
• S4
• L5

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

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

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

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

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

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

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

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

Q7. Why can extensor hallucis longus assist ankle dorsiflexion?

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

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

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

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

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