title: Septic arthritis complicating rheumatoid arthritis.
mesh_terms: D000328:Adult; D000367:Age Factors; D001170:Arthritis, Infectious / Q000175:diagnosis / Q000209:etiology* / Q000382:microbiology / Q000628:therapy; D001172:Arthritis, Rheumatoid / Q000150:complications*; D004926:Escherichia coli / Q000302:isolation & purification; D005260:Female; D006801:Humans; D007717:Knee / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011511:Proteus / Q000302:isolation & purification; D011859:Radiography; D013210:Staphylococcus / Q000302:isolation & purification; D013291:Streptococcus / Q000302:isolation & purification