Progression of erosions at sites 1 to 154-150 from baseline magnetic resonance imaging (MRI) scans to year 1 x rays and from year 1 MRI scans to year 2 x ray, in a patient with early rheumatoid arthritis (patient No 4, group 4)
| MRI baseline |
x Ray at 1 year |
MRI at 1 year |
x Ray at 2 years | |
| 6 | 3 | 1 | ||
| 8 | 12 | 2 | ||
| 13 | 3 | → | 3 | |
| 4 | 5 | |||
| 6 | → | 6 | ||
| 7 | → | 7 | ||
| 8 | 11 | |||
| 12 | ||||
| 13 | → | 13 |
↵4-150 Sites for erosions on MRI and xrays were as follows: (1) distal ulna; (2) distal radius; (3) triquetrum; (4) pisiform; (5) lunate; (6) scaphoid; (7) hamate; (8) capitate; (9) trapezoid; (10) trapezium; (11) 5th metacarpal base; (12) 4th metacarpal base; (13) 3rd metacarpal base; (14) 2nd metacarpal base; (15) 1st metacarpal base.