Fig. 1

Cumulative probability plot of each bone erosion (a) and enthesiophyte (b). Each dot represents one bone erosion or enthesiophyte. The x-axis indicates the number of individual bone erosion or enthesiophyte; the y-axis indicates the volume change for individual erosion or enthesiophyte from baseline to 5 years. Blue dots indicate regression, orange dots indicate stable, and gray dots indicate progression in bone erosion or enthesiophyte