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Septic arthritis (adult) — MCCQE Part 1 MCQ

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ModerateJoint PainSeptic arthritis (adult)MCCQE Part 1

A 45-year-old man has an acute painful erythematous right knee. Synovial fluid: WBC 65,000 (90% PMNs), Gram+ cocci in clusters. Most appropriate management?

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Correct answer: CIV antibiotics (cefazolin) plus serial aspirations or surgical washout

Septic arthritis: medical emergency. IV antibiotics + joint decompression. IA corticosteroid into infected joint absolutely contraindicated. Crystal arthropathy can coexist with infection.

Reference: https://mcc.ca/objectives/medical-experts/