Spinal cord injury: ASIA grade B: practice question

A Orthopaedics 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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Orthopaedics · Spinal cord injury: ASIA grade B

Sample item

After a fall, a man has no voluntary movement below the level of injury but retains light touch and pinprick sensation in the perianal region and below the level. Which ASIA impairment grade applies?

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

The answer and the reasoning

D. Grade B

ASIA A is complete injury with no sensory or motor function in the sacral segments S4 to S5. Grade B is sensory incomplete: sensation is preserved below the level including the sacral segments, with no motor function. Grades C and D have preserved motor function, with less than half and at least half of key muscles graded 3 or more respectively.

Option by option

  • A. Grade C

    Grade C requires preserved motor function below the level.

  • B. Grade D

    Grade D requires useful motor power in at least half of key muscles.

  • C. Grade A

    Grade A has no sacral sensory or motor function.

  • D. Grade B (correct)

    Correct. Preserved sacral sensation with no motor function is grade B.

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.

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Questions about this Orthopaedics question

What is the answer to this Orthopaedics question?

The best answer is D, Grade B. ASIA A is complete injury with no sensory or motor function in the sacral segments S4 to S5.

Why is "Grade C" not the answer?

Grade C requires preserved motor function below the level.

Why is "Grade D" not the answer?

Grade D requires useful motor power in at least half of key muscles.

Why is "Grade A" not the answer?

Grade A has no sacral sensory or motor function.

What concept does this question test?

It tests Spinal cord injury: ASIA grade B in Orthopaedics. Grade B is sensory incomplete: sensation is preserved below the level including the sacral segments, with no motor function. Grades C and D have preserved motor function, with less than half and at least half of key muscles graded 3 or more respectively.

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 Spinal cord injury: ASIA grade B?

Pair each fracture with its classic complication and nerve injured. Then use the flashcards and the other Orthopaedics 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.