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Comparative Study
. 2002 May 16:2:8.
doi: 10.1186/1471-2334-2-8.

Lack of microbiological concordance between bone and non-bone specimens in chronic osteomyelitis: an observational study

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Comparative Study

Lack of microbiological concordance between bone and non-bone specimens in chronic osteomyelitis: an observational study

Andrés F Zuluaga et al. BMC Infect Dis. .

Abstract

Background: Prognosis of chronic osteomyelitis depends heavily on proper identification and treatment of the bone-infecting organism. Current knowledge on selecting the best specimen for culture is confusing, and many consider that non-bone specimens are suitable to replace bone cultures. This paper compares the microbiology of non-bone specimens with bone cultures, taking the last as the diagnostic gold standard.

Methods: Retrospective observational analysis of 50 patients with bacterial chronic osteomyelitis in a 750-bed University-based hospital.

Results: Concordance between both specimens for all etiologic agents was 28%, for Staphylococcus aureus 38%, and for organisms other than S. aureus 19%. The culture of non-bone specimens to identify the causative organisms in chronic osteomyelitis produced 52% false negatives and 36% false positives when compared against bone cultures.

Conclusions: Diagnosis and therapy of chronic osteomyelitis cannot be guided by cultures of non-bone specimens because their microbiology is substantially different to the microbiology of the bone.

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Figures

Figure 1
Figure 1
Percent distribution of bacterial species isolated from the bones of 50 patients with chronic osteomyelitis.

References

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