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Effect of Intrawound Vancomycin Powder in Operatively Treated High-risk Tibia Fractures: A Randomized Clinical Trial.

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Summary
This summary is machine-generated.

Intrawound vancomycin powder reduced deep surgical site infections in high-risk fracture patients. This intervention was particularly effective against gram-positive infections, lowering their incidence post-surgery.

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Area of Science:

  • Orthopedic Surgery
  • Infectious Disease Prevention
  • Clinical Trials

Background:

  • Surgical site infections (SSIs) remain a concern in fracture repair despite antibiotic use.
  • High rates of SSIs persist, necessitating novel prevention strategies.

Purpose of the Study:

  • To evaluate the efficacy of intrawound vancomycin powder in preventing deep SSIs.
  • To assess the impact of intrawound vancomycin on gram-positive and gram-negative infections.

Main Methods:

  • An open-label randomized clinical trial involving 980 adult patients with high-risk tibial plateau or pilon fractures.
  • Patients received standard care with or without 1000 mg of intrawound vancomycin powder.
  • Primary outcome was deep SSI within 182 days; secondary outcomes included superficial SSI, nonunion, and wound dehiscence.

Main Results:

  • Deep SSI occurred in 6.4% of the vancomycin group vs. 9.8% in the control group (risk difference, -3.4%; P=.06).
  • A post hoc analysis revealed a significant reduction in gram-positive SSIs (risk difference, -3.7%; P=.02).
  • No significant difference was observed for gram-negative-only infections.

Conclusions:

  • Intrawound vancomycin powder is effective in reducing gram-positive deep SSIs in surgically treated high-risk fractures.
  • The findings support the use of intrawound vancomycin as an adjunct to systemic antibiotics for SSI prevention.
  • Further research may explore optimal dosing and application methods.