Advanced Flexor Hallucis Longus Quiz

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

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

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

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

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

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

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

• It acts as a bony pulley that redirects the tendon toward the sole
• It provides the muscle's proximal origin
• 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 plantar tendon can generate tension across the medial foot
• Its tendon is confined to the leg and never enters the foot
• Its tendon forms the plantar calcaneonavicular ligament
• 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 crossing between the long hallux and lateral toe flexor tendons
• It is the junction of the Achilles tendon and plantar fascia
• It is the origin of the plantar aponeurosis

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

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

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

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

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

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

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

• It is a femoral-nerve-supplied thigh muscle that extends the knee
• It is a tibial-nerve-supplied deep posterior leg muscle that flexes the hallux and assists plantarflexion
• 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