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Orthopaedics · Paediatric orthopaedics
Sample itemAn obese 13-year-old boy has limp and knee pain with limited internal rotation of the hip. What is the diagnosis?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Slipped capital femoral epiphysis
SCFE occurs in obese adolescents. Knee pain may be the only complaint, so always examine the hip. The leg lies in external rotation and a radiograph shows displacement of the femoral head.
Option by option
A. Slipped capital femoral epiphysis (correct)
Correct.
B. Perthes disease
Perthes disease occurs at 4–8 years.
C. Developmental dysplasia of the hip
DDH presents in infancy.
D. Transient synovitis
Transient synovitis is a self-limiting condition of younger children.
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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