Table 2 Ultrasonography, MRI, and x-ray findings in the MRI-examined hand
Ultrasonography | MRI | X-ray | |
|---|---|---|---|
Bone erosions | |||
MCP joint (total) | 15% | 16% | 7% |
PsA | 18% | 23% | 12% |
RA | 15% | 10% | 0% |
PIP joint (total) | 15% | 7% | 5% |
PsA | 20% | 8% | 7% |
RA | 0% | 10% | 5% |
DIP joint (total) | 1% | 3% | 5% |
PsA | 2% | 5% | 8% |
RA | 0% | 0% | 0% |
Bone proliferations | |||
MCP joint (total) | 4% | 3% | 0% |
PsA | 7% | 5% | 0% |
RA | 0% | 0% | 0% |
PIP joint (total) | 7% | 6% | 0% |
PsA | 12% | 10% | 0% |
RA | 0% | 0% | 0% |
DIP joint (total) | 7% | 2% | 4% |
PsA | 12% | 3% | 7% |
RA | 0% | 0% | 0% |
Synovitis | |||
MCP joint (total) | 28% | 27% | NA |
PsA | 28% | 35% | NA |
RA | 55% | 30% | NA |
PIP joint (total) | 22% | 20% | NA |
PsA | 27% | 23% | NA |
RA | 30% | 25% | NA |
DIP joint (total) | 12% | 5% | NA |
PsA | 18% | 7% | NA |
RA | 5 % | 5% | NA |
Tenosynovitis | |||
MCP joint (total) | 6% | 13% | NA |
PsA | 2% | 12% | NA |
RA | 25% | 30% | NA |
PIP joint (total) | 20% | 7% | NA |
PsA | 18% | 5% | NA |
RA | 45% | 20% | NA |
DIP joint (total) | 6% | 6% | NA |
PsA | 2% | 3% | NA |
RA | 25% | 20% | NA |
Insertional changes | |||
Extensor tendons (total) | 6% | 4% | NA |
PsA | 8% | 7% | NA |
RA | 5% | 0% | NA |
Flexor tendons (total) | 9% | 4% | NA |
PsA | 3% | 0% | NA |
RA | 35% | 20% | NA |
Capsular/extracapsular changes (total) | 18% | 7% | NA |
PsA | 22% | 7% | NA |
RA | 25% | 15% | NA |