To evaluate the bacterial counts of sonicatied implants in patients with osteoarticular infections. Various studies have demostrated the usefulness of sonication of retrieved implants in order to provide an accurate microbiological diagnosis. Although cutoff values for original sonicate counts have been established, the use of centrifugation may influence these values A retrospective, single-center study, including sonication fluid samples from implants removed between January 2011 and October 2023, was performed. Patients were diagnosed with implant-associated infection based on the criteria available at the time of diagnosis. Osteoarticular implants were sonicated following the protocol described by Esteban et al. Sonicated fluid was centrifuged for 20 minutes at 3000 x g, and the sediment was resuspended in 5 mL of phosphate buffer solution. Ten µl of the sample were streaked onto each medium for quantitative culture. Bacterial counts exceeding 100,000 CFU/mL were considered as 100,000 CFU/mL for statistical analysis.Aim
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