Introduction: Septic arthritis by Aggregatibacter aphrophilus is an uncommon entity, so it's important to diagnose it early, to avoid serious consequences. In adults, the knee is the most affected site.
Methods: We present a case of a 17-year-old boy, with pain in the left knee since one month ago. It shows an increase in local temperature, erythema and movement inability. A nuclear magnetic resonance (NMR) was performed and empirical treatment was given with cephalothin and clindamycin. A knee arthrotomy was realized, and intramedullary secretion and bone tissue was sent to study.
Results: the NMR images were suggestive of an infectious process. In the culture gram-negative coccobacilli were isolated, later identified like as Aggregatibacter aphrophilus. According to this diagnostic, the treatment was changed to ceftriaxone
The Main Conclusions: the rapidity and certainty in the choice of antimicrobial therapy is the most important step for a well evolution of this infection, therefore is very important to emphasize the importance of a correct identification of these rare microorganisms
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| http://dx.doi.org/10.31053/1853.0605.v76.n1.20011 | DOI Listing |
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