RT Journal Article SR Electronic T1 Septic arthritis complicating hip osteoarthritis. JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 722 OP 723 DO 10.1136/ard.50.10.722 VO 50 IS 10 A1 Donell, S A1 Williamson, D M A1 Scott, D L YR 1991 UL http://ard.bmj.com/content/50/10/722.abstract AB Four patients with osteoarthritis of the hip, who developed septic arthritis of the affected joint, are reported. The septic arthritis developed insidiously and was diagnosed with difficulty. One patient died, two required subsequent joint excision, and one arthrodesis despite antibiotics. The presence of a recognised predisposing factor to septic arthritis, such as rheumatoid arthritis or a surgically replaced joint, can provide a diagnostic pointer. These cases suggest that osteoarthritis, similarly, is a predisposing factor. It is concluded that joint sepsis should be considered if a patient with osteoarthritis develops new symptoms from a single joint with associated systemic features.