| |
All
|
Psoriasis-associated arthritis
|
Rheumatoid arthritis
|
Healthy control persons
|
|---|
|
Bone erosions
| | | | |
|
MCP joint
|
12%
|
13%
|
18%
|
3%
|
|
PIP joint
|
12%
|
14%
|
3%
|
13%
|
|
DIP joint
|
3%
|
4%
|
0%
|
0%
|
|
MTP joint
|
15%
|
15%
|
24%
|
6%
|
|
Bone proliferations
| | | | |
|
MCP joint
|
4%
|
6%
|
0%
|
0%
|
|
PIP joint
|
8%
|
12%
|
3%
|
0%
|
|
DIP joint
|
9%
|
13%
|
0%
|
5%
|
|
MTP joint
|
5%
|
5%
|
4%
|
6%
|
|
Synovitis
| | | | |
|
MCP joint
|
22%
|
19%
|
50%
|
3%
|
|
PIP joint
|
13%
|
13%
|
23%
|
3%
|
|
DIP joint
|
18%
|
22%
|
23%
|
3%
|
|
MTP joint
|
44%
|
43%
|
56%
|
34%
|
|
Tenosynovitis
| | | | |
|
MCP joint
|
7%
|
4%
|
23%
|
0%
|
|
PIP joint
|
18%
|
16%
|
40%
|
0%
|
|
DIP joint
|
6%
|
2%
|
20%
|
3%
|
|
Insertional changes
| | | | |
|
Extensor tendons
|
8%
|
12%
|
3%
|
3%
|
|
Flexor tendons
|
8%
|
7%
|
18%
|
0%
|
|
Capsular/extracapsular changes
|
9%
|
7%
|
25%
|
0%
|
- Two hundred fingers (196 MCP, 199 PIP, and 200 DIP joints) and 250 MTP joints were examined. The distribution was as follows: psoriasis-associated arthritis = 60 fingers (56 MCP, 59 PIP, and 60 DIP joints) and 150 MTP joints; rheumatoid arthritis = 20 fingers (20 MCP, 20 PIP, and 20 DIP joints) and 50 MTP joints; and healthy control persons = 20 fingers (20 MCP, 20 PIP, and 20 DIP joints) and 50 MTP joints. DIP, distal interphalangeal; MCP, metacarpophalangeal; MTP, metatarsophalangeal; PIP, proximal interphalangeal.
