Micro-organisms responsible for osteo-articular infections

Area of Science:

• Orthopedics
• Infectious Diseases
• Microbiology

Background:

• Bone and joint infections necessitate accurate etiological agent identification for effective treatment.
• Specimen source significantly impacts the interpretability and clinical significance of microbial isolates.
• Certain microorganisms, like Staphylococcus epidermidis from sinus tracts, require cautious interpretation in chronic osteomyelitis.

Purpose of the Study:

• To highlight the importance of specimen quality in diagnosing bone and joint infections.
• To differentiate between easily obtainable but difficult-to-interpret samples and vice versa.
• To guide the interpretation of microbial findings in the context of specific infection types.

Main Methods:

• Review of specimen types used in diagnosing bone and joint infections (blood cultures, arthrocentesis, biopsies, sinus tracts, open wounds).
• Analysis of the clinical significance and interpretability of isolates from different specimen sources.
• Discussion of common microorganisms and their relevance based on sample origin.

Main Results:

• Blood cultures, arthrocentesis, and bone biopsies generally yield clinically significant isolates.
• Samples from sinus tracts and open wounds are often easy to obtain but challenging to interpret.
• Microorganisms like Staphylococcus epidermidis, Corynebacterium spp., and Enterococcus spp. require careful consideration based on specimen source.

Conclusions:

• Effective management of bone and joint infections hinges on obtaining and interpreting appropriate clinical specimens.
• Long-term antimicrobial therapy requires accurate diagnosis and judicious selection of treatments.
• Understanding the nuances of specimen interpretation is crucial for successful patient outcomes.