摘要:WE REPORT THE CASE OF A 71 YEARS OLD WOMAN WITH RIGHT PRIMARY OSTEOARTHRITIS OFTHE HIP SURGED WITH CEMENTED HIP ARTHROPLASTY WICH THREE YEARS LATER ACCUSES PAINAT THE PROSTHESIS HIP WITH NONSPECIFIC INFLAMMATORY BLOOD TESTS FOR INFECTION ANDWITH NEGATIVE CULTURES. IN THE ABSENCE OF A BACTERIA GROWTH THE PROSTHETICIMPLANT WAS SENT TO A SPECIALIZED LAB IN ORDER TO SONICATE IT. AFTER ONLY 3 DAYS AFTERTHIS PROCEDURE THE ISOLATION OF STAPHYLOCOCCUS WARNERI STRAIN SUCCEEDED AND 4MOUNTHS AFTER THE REMOVAL OF THE HIP PROSTHESIS A REVISON PROSTHESIS WASINSTALLED. AFTER THE ARTHROPLASTY REVISION , THE PATIENT HAD A FAVOURABLEEVOLUTION AT GENERAL AND LOCAL LEVEL AND ALSO A GOOD SOCIAL INTEGRATION AT 4MONTHS AFTER THE SURGERY, NEVER AGAIN PRESENTING ANY SIGNS OF INFECTION.