[Criteria of the classification of spondylarthropathies].

A system of classification criteria of spondyloarthropathies was experimented in three studies. They have permitted to measure its specificity which is 86.6 p. cent and its sensitivity which is 90 p. cent. This system permits to compare theory and clinical practice and also to classify disease not yet classified. The positive and negative predictive values of these tests remain to be validated and assessed, with a multicenter study including patients affected or not with spondyloarthropathy, in order to determine whether they can also be used as a diagnosis tool.