This report describes a case of knee septic arthritis in a 69-year-old diabetic patient. At the time of admission he was receiving local treatment for a chronic skin ulcer in the same extremity and inespecific oral antibiotherapy because of an urinary tract infection. Synovial fluid cultures showed a Streptococcus agalactiae (group B streptococcus). The infection had no response to specific parenteral antibiotherapy and repeated joint irrigations-aspirations, and therefore surgical desbridement and synovectomy was required. Despite of an intensive rehabilitation program, the affected knee developed ankylosis. In a review of literature, it is remarkable the association between group B streptococcal arthritis and chronic skin ulcers in diabetic patients and the potential severity of these infections.... [Leer más...]