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Osteomyelitis — Cierny–Mader Staging

Cierny–Mader classifies adult osteomyelitis by anatomic type (I–IV) and host status (A/B/C). Type I: Medullary; Type II: Superficial; Type III: Localized (cortical sequestration with stable bone); Type IV: Diffuse (circumferential). Host: A (healthy), B (systemic/local compromise), C (treatment worse than disease). Management tailored: debridement extent, stability, dead space management, local/systemic antibiotics. Principles: radical debridement, skeletal stability, soft-tissue cover, dead-space obliteration, culture-directed antibiotics.

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Cierny–Mader classifies adult osteomyelitis by anatomic type (I–IV) and host status (A/B/C). Type I: Medullary; Type II: Superficial; Type III: Localized (cortical sequestration with stable bone); Type IV: Diffuse (circumferential). Host: A (healthy), B (systemic/local compromise), C (treatment worse than disease). Management tailored: debridement extent, stability, dead space management, local/systemic antibiotics. Principles: radical debridement, skeletal stability, soft-tissue cover, dead-space obliteration, culture-directed antibiotics.
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