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Clinical Examination of Common Isolated Peripheral Nerve Disorders MCQs

Neurology · MBBS / Medicine · 28 practice questions

1. A patient has weakness extending the leg at the knee against resistance and reports numbness along the medial surface of the lower leg, ankle, and foot. Which nerve branch is responsible for the sensory finding described?

  1. ASaphenous nerve
  2. BAnterior femoral cutaneous nerve
  3. CLateral femoral cutaneous nerve
  4. DMedial femoral cutaneous nerve
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A. Saphenous nerve The saphenous nerve, a branch of the femoral nerve, supplies the medial surface of the lower leg, ankle, and foot, while the quadriceps femoris (also femoral nerve) accounts for the motor deficit.

2. A patient has numbness of the anteromedial surface of the thigh but normal sensation over the anterior thigh and lower leg. Which specific sensory branch is most likely involved?

  1. AMedial femoral cutaneous nerve
  2. BAnterior femoral cutaneous nerve
  3. CLateral cutaneous nerve of the calf
  4. DSaphenous nerve
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A. Medial femoral cutaneous nerve The medial femoral cutaneous nerve supplies the anteromedial surface of the thigh, distinguishing it from the anterior femoral cutaneous nerve (anterior thigh) and saphenous nerve (lower leg).

3. A patient is asked to cross the thumb over the palm to touch the little finger against resistance, and this movement is weak. Which muscle is being tested?

  1. AAdductor pollicis
  2. BAbductor pollicis brevis
  3. COpponens pollicis
  4. DFlexor digitorum profundus I and II
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C. Opponens pollicis The chapter states opponens pollicis is tested by having the thumb crossed over the palm to touch the little finger against resistance.

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