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Forensic Medicine · Identification: pubic symphysis ageing
Sample itemWhich 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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