Salmonella infection in total hip replacement: tests to predict the outcome of antimicrobial therapy.

We report a hematogenous implant infection with Salmonella dublin in a renal transplant patient with total hip replacement. A 16-month treatment with cotrimoxazole failed, as evidenced by culture and electron microscopy, despite persisting low MIC after therapy. Data from a foreign body animal model and in vitro tests, which take into account the properties of adhering and stationary-phase bacteria, explain the failure of a long-term treatment with cotrimoxazole. The patient was subsequently cured by ciprofloxacin which was successful in these tests. No relapse was noted after a follow-up of 1 year.