Intermediate Common Fibular Nerve Quiz

Q1. From which divisions of the sacral plexus is the common fibular component derived?

• Anterior divisions
• Gray rami communicantes
• Dorsal rami
• Posterior divisions

Q2. What is the relationship of the common fibular nerve to the biceps femoris tendon near the popliteal fossa?

• It follows the medial border of the biceps femoris tendon
• It passes through the biceps femoris tendon
• It lies medial to semimembranosus
• It runs within the patellar ligament

Q3. Which branch of the common fibular nerve supplies skin over the upper lateral leg?

• Posterior femoral cutaneous nerve
• Lateral sural cutaneous nerve
• Medial plantar nerve
• Saphenous nerve

Q4. Which branch from the common fibular nerve may communicate with a tibial nerve branch in formation of the sural nerve?

• Medial calcaneal branch
• Fibular communicating branch
• Recurrent genicular branch
• Deep fibular nerve

Q5. Which articular branch of the common fibular nerve turns anteriorly and ascends toward the knee?

• Medial calcaneal branch
• Recurrent genicular branch
• Infrapatellar branch
• Medial plantar branch

Q6. Which cutaneous area is characteristically supplied by the deep fibular nerve?

• Entire sole
• Medial border of the foot
• Lateral heel
• First dorsal web space

Q7. Which area is supplied mainly by the superficial fibular nerve?

• Entire plantar surface
• Most of the dorsum of the foot
• Medial thigh
• Posterior thigh

Q8. Why can a lesion of the common fibular nerve weaken both dorsiflexion and eversion?

• Both movements are performed by quadriceps
• Both terminal motor branches can be affected
• The lesion interrupts the femoral nerve
• The lesion denervates the tibial nerve

Q9. Which ankle movement is generally preserved in an isolated common fibular nerve lesion?

• Eversion
• Plantarflexion
• Dorsiflexion
• Toe extension

Q10. What distinguishes a common fibular nerve lesion from an isolated deep fibular nerve lesion?

• A common fibular lesion can additionally weaken eversion
• The lesions always produce identical findings
• A common fibular lesion preserves all lateral compartment function
• A deep fibular lesion always causes loss of plantarflexion