[Bacterial sacroiliitis].

We saw two cases of infectious sacroiliitis in young patients. The multi-various clinical symptoms, the predispositions, as well as the alteration of laboratory analyses are described. Further, we discuss problems of early diagnosis, diagnostic measures like x-ray, sonography, bone-scan, computerized tomography scan, magnetic resonance imaging, and their particular significance. Computerized tomography scan of iliosacral joints determined the further therapeutic procedure. In both cases, we prescribed cephalosporin-antibiotic cefotaxime-sodium.