Identification: pubic symphysis ageing: practice question

A Forensic Medicine 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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Forensic Medicine · Identification: pubic symphysis ageing

Sample item

Which skeletal site, assessed by Todd's phases or the Suchey-Brooks system, is regarded as among the most reliable for estimating age in young and middle-aged adults?

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

The answer and the reasoning

B. Pubic symphysis

The surface of the pubic symphysis changes progressively from a ridged, billowed face in young adults to a flat, then rimmed and finally eroded surface in old age. Because the changes are fairly regular, Todd's ten phases and the Suchey-Brooks stages are widely used.

Option by option

  • A. Cranial sutures

    Cranial suture closure is highly variable and less reliable.

  • B. Pubic symphysis (correct)

    The pubic symphysis shows regular morphological change through adulthood.

  • C. Lower end of the radius

    The lower radial epiphysis fuses in late adolescence and gives no information for older adults.

  • D. Sternum

    The sternal segments unite in young adult life, so the sternum is less useful than the pubic symphysis for staging middle age.

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 Forensic Medicine question

What is the answer to this Forensic Medicine question?

The best answer is B, Pubic symphysis. The surface of the pubic symphysis changes progressively from a ridged, billowed face in young adults to a flat, then rimmed and finally eroded surface in old age.

Why is "Cranial sutures" not the answer?

Cranial suture closure is highly variable and less reliable.

Why is "Lower end of the radius" not the answer?

The lower radial epiphysis fuses in late adolescence and gives no information for older adults.

Why is "Sternum" not the answer?

The sternal segments unite in young adult life, so the sternum is less useful than the pubic symphysis for staging middle age.

What concept does this question test?

It tests Identification: pubic symphysis ageing in Forensic Medicine. Because the changes are fairly regular, Todd's ten phases and the Suchey-Brooks stages are widely used.

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 Identification: pubic symphysis ageing?

Learn postmortem changes with their timelines, and toxicology as poison, sign, test and antidote. Then use the flashcards and the other Forensic Medicine 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.