To date, there is no available tool that allows, at individual level, determination of the probability to develop clinically relevant complications of prolonged glucocorticoid therapy. In patients with inflammatory rheumatic disorders requiring prolonged glucocorticoid therapy, such tool could be useful to adapt first-line treatment decisions (in daily practice and in future clinical trials). The main objective of the study is to identify routine clinical, biological and DXA baseline characteristics predictive of the occurrence of clinically relevant complications of glucocorticoid therapy at 1 year, in order to propose a predictive score.