Intermediate Superficial Fibular Nerve Quiz

Q1. Near its origin, where does the superficial fibular nerve enter after branching from the common fibular nerve?

• The lateral compartment of the leg
• The femoral triangle
• The adductor canal
• The deep posterior compartment

Q2. Between which muscles does the superficial fibular nerve commonly descend for part of its course?

• Semitendinosus and semimembranosus
• Tibialis anterior and extensor hallucis longus
• Gastrocnemius and soleus
• Fibularis longus and fibularis brevis

Q3. What is the functional significance of the nerve piercing the deep fascia in the distal leg?

• It enters the sole through the flexor retinaculum
• It becomes the tibial nerve
• It becomes superficial for its distal cutaneous distribution
• It enters the posterior compartment

Q4. Into which named cutaneous branches does the superficial fibular nerve commonly divide?

• Medial and lateral sural nerves
• Deep fibular and recurrent genicular nerves
• Medial and intermediate dorsal cutaneous nerves
• Medial and lateral plantar nerves

Q5. Which motor deficit is expected from a lesion affecting the superficial fibular nerve proximal to its muscular branches?

• Weak foot eversion
• Weak ankle dorsiflexion
• Weak ankle plantarflexion
• Weak knee extension

Q6. Why is ankle dorsiflexion usually preserved in an isolated superficial fibular nerve lesion?

• The superficial fibular nerve supplies tibialis anterior
• The dorsiflexors are supplied by the tibial nerve
• Fibularis brevis is the principal dorsiflexor
• The dorsiflexors are supplied by the deep fibular nerve

Q7. Which sensory territory is usually spared when only the superficial fibular nerve is injured?

• Dorsum of several toes
• Much of the central dorsum of the foot
• Distal anterolateral leg
• First dorsal web space

Q8. Why is the superficial fibular nerve classified as a mixed peripheral nerve?

• It carries both motor and sensory fibers
• It carries only motor fibers
• It carries only sympathetic fibers
• It carries only sensory fibers

Q9. Which nerve supplies the anterior leg muscles and the first dorsal web space?

• Sural nerve
• Tibial nerve
• Saphenous nerve
• Deep fibular nerve

Q10. How does an isolated superficial fibular nerve lesion usually differ from a common fibular nerve lesion at the fibular neck?

• Dorsiflexion is usually preserved in the isolated superficial fibular lesion
• Plantarflexion is lost only in the superficial fibular lesion
• Both lesions always have identical motor findings
• Tibialis anterior is denervated only in the superficial fibular lesion