Objective. To determine the radiographic progression of disease in rheumatoid arthritis (RA) patients from the Cooperative Systematic Studies of the Rheumatic Diseases clinical trial of auranofin (AUR) versus methotrexate (MTX) versus a combination of the two. Methods. Baseline (week‐0) and study‐end (week‐48) hand/wrist radiographs in 200 of the 211 patients who completed this multicenter trial (95%) were scored blindly by 2 readers for the presence of erosions and joint space narrowing (JSN). Both intraobserver reliability and interobserver reliability were 0.80 for erosions (P ≤ 0.001); intraobserver reliability and interobserver reliability were both 0.75 for JSN (P ≤ 0.001). Results. Worsening erosion and JSN scores occurred in all 3 treatment groups, but the difference from baseline reached significance only in the AUR group. Conclusion. Clinical improvement has been clearly documented in all 3 treatment groups in this trial. Radiographic deterioration occurs in RA even when clinical features improve, but progression of disease as determined radiographically may be slowed by treatment with MTX. Copyright © 1993 American College of Rheumatology
