[Radiologic diagnosis of rheumatic diseases]

Rheumatic disease have many common radiological characteristics. They all affect one or more joints. Radiological exams represent a part of the diagnostic procedure when there is a suspicion of rheumatic disease. This paper describes both the basics and characteristics radiological changes visible on a classic radiograph which, in addition to other results, allow the discrimination of different rheumatic diseases. Standard or classical radiographs are the cornerstones of radiological evaluation, and can be improved by other radiological methods such as US, CT or MR.