Intermediate Lateral Femoral Cutaneous Nerve Quiz

Q1. How does the lateral femoral cutaneous nerve usually enter the thigh?

• Deep to or through the inguinal ligament near the ASIS
• Through the obturator canal
• Through the greater sciatic foramen
• Through the superficial inguinal ring

Q2. What is the relationship of the lateral femoral cutaneous nerve to the femoral nerve on iliacus?

• It lies within the femoral nerve
• It courses more laterally toward the ASIS
• It passes medial to psoas major
• It enters the obturator canal

Q3. Which structure commonly forms the site of compression in meralgia paresthetica?

• The inguinal ligament near the ASIS
• The obturator membrane
• The flexor retinaculum of the ankle
• The popliteal fascia

Q4. Which finding would be expected in isolated meralgia paresthetica?

• Quadriceps paralysis
• Anterolateral thigh sensory symptoms without motor weakness
• Loss of hip adduction
• Foot drop with absent ankle reflex

Q5. Does isolated lateral femoral cutaneous neuropathy usually reduce the patellar reflex?

• No, the patellar reflex is usually preserved
• Yes, it is always absent
• No, because the reflex uses the tibial nerve
• Yes, because the nerve supplies quadriceps

Q6. What happens to the lateral femoral cutaneous nerve after it enters the thigh?

• It divides into cutaneous branches for the anterolateral thigh
• It enters quadriceps as a motor nerve
• It becomes the saphenous nerve
• It joins the obturator nerve

Q7. Why can tight belts or garments contribute to meralgia paresthetica?

• They interrupt the femoral artery in every case
• They compress the sciatic nerve in the popliteal fossa
• They injure the obturator nerve in the obturator canal
• They can compress the nerve near the inguinal ligament and ASIS

Q8. Which feature distinguishes the lateral femoral cutaneous nerve from the femoral nerve?

• It supplies quadriceps motor fibers
• It is purely sensory, unlike the mixed femoral nerve
• It travels through the obturator canal
• It arises from S1 to S3

Q9. Which symptom distribution most strongly suggests lateral femoral cutaneous nerve involvement?

• Loss of sensation over the sole
• Numbness limited to the medial foot
• Burning or numbness over the anterolateral thigh
• Weakness of thigh adduction

Q10. Why can the nerve's position near the ASIS vary between individuals?

• Its course relative to the ASIS and inguinal ligament is anatomically variable
• It always travels inside the femoral artery
• It always enters the deep inguinal ring
• It is absent in all adults