Therefore, in a research setting “early axSpA” should be defined as ≤2 years duration of axial symptoms. Axial symptoms should include spinal/buttock pain or morning stiffness and should be considered ...

The Assessment of SpondyloArthritis International Society has recently developed new criteria for classification of both axial and peripheral SpA. The new criteria were formulated with the aim of ...

Correspondence to Padmaja Sankaridurg, Brien Holden Vision Institute, Sydney 2052, New South Wales, Australia; p.sankaridurg{at}bhvi.org; Dr Xun Xu; drxuxun{at}sjtu.edu.cn Purpose To develop ...