Erosive joints at baseline
PIP
MCP
Wrist
CMC + os trapezium
MTP
IP1 feet
≥1 erosive joint (n=55)
23
17
12
8
22
12
≥2 erosive joints (n=27)
11
13
10
8
12
8
≥3 erosive joints (n=15)
6
8
9
6
8
7