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Objective:  Periprosthetic infections (PPI) after total hip and total knee arthroplasty (THA, TKA) are subdivided into early and late infections. Early PPIs are defined as the occurrence of infection within 6 weeks following the primary surgery. Aim of therapy in early PPI is the retention of the prosthesis using dilution, jet dilution or local antibiotics. However, as of yet, no evidence is available supporting these procedures. The aim of this study was to evaluate their success rates.   Methods:  We conducted a systematic literature review of studies reporting on early PPI. Clinical trials published after 1990 that reported success or failure rates as the primary outcome were included. A meta-analysis using the Scheffé-Test showed if there are any advantages of single treatment concepts.   Results:  We identified 575 patients over 10 studies. Success rates were diverse: Undergoing dilution without jet lavage revealed treatment success in 49.48%, using jet dilution increased the success rate to 78.26%. Local antibiotics were successfully used in 55% of the cases. The meta-analysis compared the three interventions and showed no significant difference in using dilution, jet dilution or local antibiotics. Even combining local antibiotics and dilution/jet dilution does not provide significantly higher success rates.    Conclusion:  Previous studies showed differences in methods and results, however pooling the data of these studies for our meta-analysis didn’t show significant advantages. We therefore conclude that studies conducted until thus far cannot provide any recommendation as to whether using dilution, jet dilution, local antibiotics or any combination of three is better for treating early PPI cases.

Early periprosthetic infection: dilution, jet dilution or local antibiotics. Which way to go? A meta-analysis on 575 patients.