Culture-negative prosthetic joint arthritis related to Coxiella burnetii.

BACKGROUND

The number of hip and knee arthroplasty procedures is steadily increasing as life expectancy increases. Coxiella burnetii may be responsible for culture-negative prosthetic joint arthritis and is associated with antibiotic failure and repeated surgeries. We report the first case series of C. burnetii-related culture-negative prosthetic joint arthritis.

METHODS

Cases were retrieved from the French National Referral center for Q fever. Diagnosis was based on (18)fluorodeoxyglucose positron emission tomography, serology, broad-range polymerase chain reaction, and C. burnetii-specific polymerase chain reaction.

RESULTS

Four cases of C. burnetii-related culture-negative prosthetic joint arthritis were found. Standard bacteriologic procedures would have missed the diagnosis in all cases. Etiologic diagnosis improved the outcome in all but 1 case.

CONCLUSIONS

A systematic, comprehensive diagnostic strategy should be used in culture-negative prosthetic joint arthritis, including testing for C. burnetii in endemic areas.