Maxillofacial surgery: orbital blowout fracture: practice question

A Dentistry 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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Dentistry · Maxillofacial surgery: orbital blowout fracture

Sample item

A cricket ball hits a player's eye. He has diplopia on upward gaze, enophthalmos and infraorbital numbness. What is the likely injury?

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

The answer and the reasoning

A. Orbital floor blowout fracture with inferior rectus entrapment

Sudden orbital pressure fractures the thin orbital floor, and herniated contents with the inferior rectus become trapped. This restricts upward gaze and damages the infraorbital nerve. CT shows a teardrop sign.

Option by option

  • A. Orbital floor blowout fracture with inferior rectus entrapment (correct)

    Correct. Findings match a floor blowout.

  • B. Le Fort III fracture

    Le Fort III causes mobile midface and is a larger injury.

  • C. Isolated nasal fracture

    Nasal fractures do not cause diplopia.

  • D. Optic canal fracture

    An optic canal fracture causes visual loss.

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 Dentistry question

What is the answer to this Dentistry question?

The best answer is A, Orbital floor blowout fracture with inferior rectus entrapment. Sudden orbital pressure fractures the thin orbital floor, and herniated contents with the inferior rectus become trapped.

Why is "Le Fort III fracture" not the answer?

Le Fort III causes mobile midface and is a larger injury.

Why is "Isolated nasal fracture" not the answer?

Nasal fractures do not cause diplopia.

Why is "Optic canal fracture" not the answer?

An optic canal fracture causes visual loss.

What concept does this question test?

It tests Maxillofacial surgery: orbital blowout fracture in Dentistry. This restricts upward gaze and damages the infraorbital nerve. CT shows a teardrop sign.

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 Maxillofacial surgery: orbital blowout fracture?

Learn the dental formula, eruption ages and tooth structure once, as tables. Then use the flashcards and the other Dentistry 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.