Advanced Flexor Hallucis Longus Quiz

Q1. Why can a tibial nerve lesion in the leg weaken flexor hallucis longus?

• Its motor fibers travel only in the deep fibular nerve
• Its motor fibers travel only in the superficial fibular nerve
• Its motor fibers arise from the femoral nerve
• Its motor fibers travel through the tibial nerve

Q2. Why is flexor hallucis longus important during the final part of stance in walking or running?

• It extends the hallux and dorsiflexes the ankle
• It prevents all forefoot loading
• It stabilizes the hallux and contributes to propulsion
• It produces knee extension during toe-off

Q3. Why can flexor hallucis longus tendon pathology cause pain near the posteromedial ankle?

• The tendon passes through constrained posteromedial ankle structures
• The tendon crosses the fibular head
• The tendon passes over the patella
• The tendon lies entirely subcutaneous on the lateral ankle

Q4. How does the sustentaculum tali influence the course of flexor hallucis longus?

• It provides the muscle's proximal origin
• It acts as a bony pulley that redirects the tendon toward the sole
• It separates the tendon from the foot completely
• It directs the tendon onto the dorsum of the foot

Q5. Why can flexor hallucis longus assist support of the medial longitudinal arch?

• Its tendon forms the plantar calcaneonavicular ligament
• Its tendon is confined to the leg and never enters the foot
• Its plantar tendon can generate tension across the medial foot
• Its tendon directly forms the talar head

Q6. Why is the knot of Henry important in flexor hallucis longus anatomy?

• It is the crossing between the tibial and common fibular nerves
• It is the junction of the Achilles tendon and plantar fascia
• It is the origin of the plantar aponeurosis
• It is the crossing between the long hallux and lateral toe flexor tendons

Q7. Why can posterior ankle impingement affect flexor hallucis longus function in some athletes?

• The tendon lies within the popliteal artery
• The tendon traverses the posterior ankle where repeated plantarflexion can stress it
• The tendon passes through the anterior ankle extensor retinaculum
• The tendon crosses the lateral femoral condyle

Q8. How does the distal attachment of flexor hallucis longus explain its action at the great toe interphalangeal joint?

• It inserts on the first metatarsal base
• It crosses dorsal to the joint and inserts on the nail bed
• It crosses plantar to the joint and inserts on the distal phalanx
• It ends on the proximal phalanx before reaching the joint

Q9. Why may weakness of flexor hallucis longus reduce effective push-off?

• It prevents quadriceps activation
• It abolishes hip extension
• It reduces hallux stabilization and part of the plantarflexion contribution
• It directly paralyzes all intrinsic foot muscles

Q10. Which statement best integrates the anatomy of flexor hallucis longus?

• It is a tibial-nerve-supplied deep posterior leg muscle that flexes the hallux and assists plantarflexion
• It is a femoral-nerve-supplied thigh muscle that extends the knee
• It is a deep-fibular-nerve-supplied anterior leg muscle that extends the hallux
• It is a superficial-fibular-nerve-supplied lateral leg muscle that only everts the foot