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Case Reports in Orthopedics
Volume 2015, Article ID 519190, 3 pages
Case Report

Kingella kingae Causing Septic Arthritis of the Knee in an Immunocompetent Adult

1Department of Trauma and Orthopaedics, Warrington Hospital, Lovely Lane, Warrington WA5 1QG, UK
2Department of Trauma and Orthopaedics, Northern General Hospital, Herries Road, Sheffield S5 7 AU, UK

Received 4 April 2015; Accepted 9 June 2015

Academic Editor: Paul E. Di Cesare

Copyright © 2015 J. Ricketts et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The bacterium Kingella kingae is a species of Gram-negative coccobacillus usually found in the oropharynx. This is an emerging pathogen reported to cause bacteraemia, endocarditis, and osteoarticular infections in children and endocarditis in the immunocompromised adult. However, there are few cases of isolated joint infections reported in the immunocompetent adult. Due to specific isolation techniques required, delay in diagnosis can compromise patient outcome. We report a rare case of septic arthritis of the knee in an immunocompetent adult caused by K. kingae.