Researchers looked at how intrawound antibiotic powder, specifically vancomycin and tobramycin, affects patients undergoing surgery for pelvic and lower-limb fractures. The study analyzed data from 4,906 patients to see if placing the powder directly into the wound provided better protection than standard systemic medicine alone.
The findings showed a significant reduction in fracture-related infections. This effect was particularly notable in high-risk fractures and open fractures. However, the treatment did not show a significant impact on superficial skin infections or the risk of bone failing to heal (nonunion). Additionally, there was no significant difference in hospital stay length or rates of acute kidney injury.
Because much of this data comes from observational studies, it shows an association rather than a proven cause. There were also some concerns regarding a shift toward Gram-negative infections in the group receiving the powder. Because safety data is based on only a few studies with low certainty, these results should be viewed as preliminary evidence for clinical use.
