A 4yo child presents with pain of spontaneous onset in his knee of 2 days duration. He has
developed mild fever in the 2nd day. He can walk but has a limp. Exam: painful restriction in the
right hip. What is the most probable dx?
a. Osteosarcoma
b. Septic arthritis
c. TB arthritis
d. Exostosis
e. Osteomyelitis
answer: B
decrease ROM indicated septic joint as opposed to osteomyelitis
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