Avascular necrosis: Kienbock disease: 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 · Avascular necrosis: Kienbock disease

Sample item

A manual labourer has chronic dorsal wrist pain, stiffness and tenderness over the centre of the dorsum. Radiographs show a sclerotic, collapsed lunate. What is the diagnosis?

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

The answer and the reasoning

C. Kienbock disease

Kienbock disease is avascular necrosis of the lunate, associated with negative ulnar variance, causing wrist pain and weakened grip. Preiser disease affects the scaphoid, and Freiberg disease the metatarsal head.

Option by option

  • A. Preiser disease

    Preiser disease is osteonecrosis of the scaphoid.

  • B. Freiberg disease

    Freiberg disease is osteochondrosis of the second metatarsal head.

  • C. Kienbock disease (correct)

    Correct. Lunate avascular necrosis is Kienbock disease.

  • D. Scheuermann disease

    Scheuermann disease is thoracic kyphosis due to vertebral endplate changes.

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 C, Kienbock disease. Kienbock disease is avascular necrosis of the lunate, associated with negative ulnar variance, causing wrist pain and weakened grip.

Why is "Preiser disease" not the answer?

Preiser disease is osteonecrosis of the scaphoid.

Why is "Freiberg disease" not the answer?

Freiberg disease is osteochondrosis of the second metatarsal head.

Why is "Scheuermann disease" not the answer?

Scheuermann disease is thoracic kyphosis due to vertebral endplate changes.

What concept does this question test?

It tests Avascular necrosis: Kienbock disease in Orthopaedics. Preiser disease affects the scaphoid, and Freiberg disease the metatarsal head.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. 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 Avascular necrosis: Kienbock disease?

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.