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Related Experiment Video

Updated: Jan 31, 2026

Optimizing Minimally Invasive Spine Surgery: A Fully 3D CT O-Arm Navigated Workflow in MIS TLIF
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Does Addition of Tobramycin Powder Reduce Infection Rates After Spine Surgery?

Yu-Po Lee1, Saifal-Deen Farhan1, Arif Pendi1

  • 1University of California, Irvine, Orange, CA, USA.

Global Spine Journal
|December 19, 2018
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Summary
This summary is machine-generated.

Adding antibiotic powder, specifically vancomycin, to surgical wounds significantly reduced surgical site infections in posterior lumbar fusion patients. While tobramycin further decreased infection rates, it also altered the types of bacteria, necessitating careful consideration of risks and benefits.

Keywords:
antibiotic powderinstrumented fusion surgeryprophylaxisretrospective chart reviewsurgical site infectiontobramycinvancomycin

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Area of Science:

  • Spine Surgery
  • Infectious Disease
  • Surgical Innovation

Background:

  • Surgical site infections (SSIs) are a significant complication following posterior lumbar instrumented fusion.
  • Optimizing prophylactic measures is crucial to minimize patient morbidity and healthcare costs.

Purpose of the Study:

  • To evaluate the efficacy of intraoperative vancomycin and tobramycin powder in reducing SSIs in posterior lumbar instrumented fusion.
  • To analyze the impact of antibiotic powder on the spectrum of bacterial organisms causing SSIs.

Main Methods:

  • Retrospective chart review of patients undergoing posterior instrumented lumbar fusions.
  • Multicenter electronic database search to identify patient cohorts.
  • Comparison of SSI rates between groups receiving no antibiotic powder, vancomycin powder, and vancomycin plus tobramycin powder.

Main Results:

  • Vancomycin powder significantly reduced SSIs from 5.7% to 2.0% (P = .018).
  • Addition of tobramycin powder to vancomycin further decreased SSIs to 1.8% (P = .041 vs. no powder), but not significantly compared to vancomycin alone (P = 1.00).
  • Antibiotic powder use correlated with a shift towards gram-negative organisms, particularly with the addition of tobramycin.

Conclusions:

  • Intraoperative antibiotic powder, particularly vancomycin, is effective in reducing SSIs after posterior lumbar fusion.
  • While tobramycin may offer a marginal additional benefit in reducing infection rates, it alters the microbial spectrum, warranting careful risk-benefit assessment.
  • Clinicians should weigh the potential benefits against the risks of altered bacterial resistance patterns when considering antibiotic powder use.