Nolla Solé, Joan MiquelMurillo Rubio, ÓscarNarváez García, Francisco JavierGómez Vaquero, CarmenLora-Tamayo Morillo-Velarde, JaimePedrero, SalvadorCabo Cabo, XavierAriza Cardenal, Javier2018-11-302018-11-302016-06-250025-7974https://hdl.handle.net/2445/126652Pyogenic arthritis of native joints due to Bacteroides fragilis seems to be an infrequent disease. We analyzed the cases diagnosed in a tertiary hospital during a 22-year period and reviewed the literature to summarize the experience with this infectious entity.In our institution, of 308 patients with pyogenic arthritis of native joints, B fragilis was the causative organism in 2 (0.6%) cases. A MEDLINE search (1981-2015) identified 19 additional cases.Of the 21 patients available for review (13 men and 8 women, with a mean age, of 54.417 years), 19 (90%) presented a systemic predisposing factor for infection; the most common associated illness was rheumatoid arthritis (8 patients). Bacteremia was documented in 65% (13/20) of cases. In 5 patients (24%), 1 or more concomitant infectious process was found. Metronidazole was the most frequently used antibiotic. Surgical drainage was performed in 11 cases (52%). The overall mortality rate was 5%.Pyogenic arthritis of native joints due to B fragilis is an infrequent disease that mainly affects elderly patients with underlying medical illnesses and in whom bacteremia and the presence of a concomitant infectious process are frequent conditions.application/pdfengcc-by (c) Nolla Solé, Joan Miquel et al., 2016http://creativecommons.org/licenses/by/3.0/esArtritis reumatoideArtritis infecciosaBacteris anaerobisMedicina clínicaRheumatoid arthritisInfectious arthritisAnaerobic bacteriaClinical medicineinfo:eu-repo/semantics/article6673482018-11-30info:eu-repo/semantics/openAccess27336895