Figure 2.

Change in Sharp scores, joint-space narrowing (JSN), and joint erosion (JE) scores showing that rheumatoid arthritis progresses at a constant, linear rate. Adapted, with permission, from John Wiley & Sons, Inc. [8].

Yocum Arthritis Res Ther 2004 6(Suppl 2):S24-S30   doi:10.1186/ar997