Peripheral nerve injury quiz

Identify the nerve that is injured. The image shows what happens when trying to make a fist

Answer explanation

The MCP joints of the 4th and 5th finger are flexed, while there are extension of the 1st, 2nd and 3rd digits that occur while trying to make a fist.

Identify the nerve that is injured. The image shows what occurs while the hand is at rest

Answer explanation

The MCP joints of the 4th and 5th finger is hyperextended while the DIP and POP joints are flexed. Hypothenar wasting is also visible.

Which nerve is injured after an ankle fracture resulting in clawing of the toes?

• Tibial nerve

• Posterior tibial nerve

• Common fibular nerve

• Sciatic nerve

Which nerve is injured after a deep laceration to the posterior aspect of the knee resulting in the inability to plantarflex the ankle or flex the toes?

• Posterior tibial nerve

• Tibial nerve

• Common fibular nerve

• Deep fibular nerve

Which nerve is injured after a fibular head fracture resulting in drop foot?

• Sciatic nerve

• Deep fibular nerve

• Common fibular nerve

• Tibial nerve

Which nerve is injured after a traumatic hip dislocation resulting in drop foot?

What is the quick clinical assessment to evaluate the integrity of the median nerve?

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Which nerve is affected when this action is not possible?

• Femoral nerve

• Sciatic nerve

• Tibial nerve

• Common fibular nerve

Answer explanation

Active knee extension is achieved by the quadriceps muscle, which is supplied by the femoral nerve.

What is it called when the ulnar nerve is compressed behind the medial epicondyle?

• Cubital tunnel syndrome

• Guyon's canal syndrome

• Carpal tunnel syndrome

• Posterior interosseous syndrome

What is the test called when percussion over the nerve result in symptoms?

• Tinel's test
• Phalen's test

• Froment's sign

• Nerve conduction study