10/07/2026
When is it truly safe to convert an open fracture from external fixation to internal fixation?
Soft tissue may look better after 1–2 weeks.
The wound may appear quiet.
No fever.
No redness.
No obvious drainage.
But that does not always mean the fracture environment is safe.
In high-energy open fractures, the biggest hidden danger before conversion is **subclinical infection**. If plates, screws, or intramedullary nails are implanted too early, the result can be severe: fracture-related infection, chronic osteomyelitis, nonunion, and repeated surgery.
Traditional indicators such as WBC, ESR, and CRP are helpful, but they are not perfect. Trauma and surgery themselves can elevate inflammatory markers, making it difficult to separate normal healing response from infection risk.
That is why **PCT + IL-6 combined testing** deserves attention.
A safer conversion signal may include:
* both markers trending downward
* both below threshold before internal fixation
* good clinical wound condition
If PCT and IL-6 remain elevated before surgery, conversion should be delayed and reassessed.
In staged open fracture care, speed matters.
But safety matters more.