Regional anaesthesia: ankle block: practice question

A Anaesthesia question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Anaesthesia · Regional anaesthesia: ankle block

Sample item

How many nerves are blocked in a complete ankle block?

ATwoBThreeCSevenDFive

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

D. Five

The nerves are posterior tibial, sural, superficial peroneal, deep peroneal and saphenous. The first two are branches of the sciatic nerve (tibial and common peroneal contribute), and the saphenous is from the femoral nerve.

Option by option

A. Two
Two is too few.
B. Three
Three leaves part of the foot unblocked.
C. Seven
Seven exceeds the nerve supply.
D. Five (correct)
Correct. Five nerves are blocked.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

Questions about this Anaesthesia question

What is the answer to this Anaesthesia question?

The best answer is D, Five. The nerves are posterior tibial, sural, superficial peroneal, deep peroneal and saphenous.

Why is "Two" not the answer?

Two is too few.

Why is "Three" not the answer?

Three leaves part of the foot unblocked.

Why is "Seven" not the answer?

Seven exceeds the nerve supply.

What concept does this question test?

It tests Regional anaesthesia: ankle block in Anaesthesia. The first two are branches of the sciatic nerve (tibial and common peroneal contribute), and the saphenous is from the femoral nerve.

How hard is this question?

We tag it as a multi-step question: it asks you to combine more than one idea. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Regional anaesthesia: ankle block?

Make a table of each agent, its key advantage and its main side effect. Then use the flashcards and the other Anaesthesia questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.