What is the general approach to antibiotic therapy for open fractures?

• A. Debridement and IV antibiotics with broad-spectrum coverage, tailored to contamination
• B. Oral antibiotics only
• C. No antibiotics
• D. Antibiotics after wound closure

Answer: (A)

Open fractures carry a high risk of infection because bone and soft tissue are exposed to the outside environment. The most effective approach combines prompt surgical debridement to remove devitalized tissue and contaminants with immediate IV antibiotics that provide broad coverage for the array of organisms that can be introduced, including skin flora, environmental Gram‑negatives, and anaerobes depending on the contamination. Starting antibiotics intravenously as soon as possible helps prevent early bacterial proliferation while the wound is being cleaned and the fracture stabilized. Because the contamination source can vary—from clean skin to soil, water, or farm materials—the regimen is broad at the outset and then narrowed to specific organisms once culture data are available. Relying on antibiotics alone or delaying them until after wound closure increases infection risk, and oral antibiotics alone typically do not achieve adequate tissue concentrations in the acute open-fracture setting.