SUMMARY
Even though predictive risk classifications are a widely accepted tool to define a suitable treatment protocol a classification is still missing considering the difficulty in treating the causative pathogen antibiotically in prosthetic joint infections.Treatment outcomes in 120 patients with proven prosthetic joint infections in hip and knee prostheses were regressed on time of infection, systemic risk factors, local risk factors and the difficulty in treating the causing pathogen. The main outcome variable was “definitely free of infection” after two years in a logistic regression model.66 male and 54 female patients, with a mean age at surgery of 68.3 years ±12.0 and a mean BMI of 26.05±6.21 were included in our survey and followed for 29.0 ± 11.3 months. We found a significant association (p<0.001) between our score and the outcome parameters evaluated.These results show that our score is an independent predictor for the cure rate in prosthetic joint infections and that there is a statistically significant, sizable decrease in cure rate with an increase in score. It might help to provide extra care if needed.