Chronic Brucella infection of the supra-patellar bursa with sinus formation

A case of supra-patellar bursitis with the formation of discharging sinus is described. B abortus was isolated from resected bursal tissue. While osteoarticular complications of brucellosis are common and a number of different clinical syndromes are now recognised, disease of the bursae is rare and as far as is known sinus formation has not been described before in this setting.