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Orthopaedics · Arthritis
Sample itemWhat crystal is negatively birefringent?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. Monosodium urate
This item reviews Arthritis; Monosodium urate is the best answer because it directly matches the orthopedic or dermatologic pattern described.
Option by option
A. Cholesterol
Cholesterol is plausible but is not the best answer.
B. Calcium oxalate
Calcium oxalate is unsupported by the key finding.
C. CPPD
CPPD does not fit the stated presentation.
D. Monosodium urate (correct)
Correct. Monosodium urate fits the defining feature.
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.