Table 2.
Joints with US synovitis*
| US definition of synovitis | |||
|---|---|---|---|
| GS ≥2 | PD ≥1 | GS ≥2 or PD ≥1 | |
| Shoulder† | 2 (1/50) | 0 (0/50) | 2 (1/50) |
| Elbow‡ | 5 (5/98) | 2 (2/98) | 5 (5/98) |
| Wrist | 46 (45/98) | 21 (21/98) | 50 (49/98) |
| MCP1 | 14 (13/96) | 6 (6/96) | 15 (14/96) |
| MCP2 | 36 (35/98) | 15 (15/98) | 36 (35/98) |
| MCP3 | 19 (19/98) | 11 (11/98) | 21 (21/98) |
| MCP4 | 10 (10/98) | 4 (4/98) | 11 (11/98) |
| MCP5 | 24 (24/98) | 3 (3/98) | 24 (24/98) |
| PIP1 | 14 (13/96) | 8 (8/96) | 14 (13/96) |
| PIP2 | 22 (22/98) | 10 (10/98) | 22 (22/98) |
| PIP3 | 21 (21/98) | 9 (9/98) | 21 (21/98) |
| PIP4 | 12 (12/98) | 2 (2/98) | 12 (12/98) |
| PIP5 | 9 (9/98) | 3 (3/98) | 9 (9/98) |
| Knee | 42 (41/98) | 18 (18/98) | 43 (42/98) |
| Ankle§ | 6 (6/98) | 1 (1/98) | 6 (6/98) |
| MTP1 | 34 (33/98) | 3 (3/98) | 35 (34/98) |
| MTP2 | 47 (46/98) | 3 (3/98) | 47 (46/98) |
| MTP3 | 36 (35/98) | 3 (3/98) | 36 (35/98) |
| MTP4 | 20 (20/98) | 0 (0/98) | 20 (20/98) |
| MTP5 | 13 (13/98) | 3 (3/98) | 13 (13/98) |
| Total | 22 (423/1,908) | 7 (125/1,908) | 23 (433/1,908) |
*
Values are the percentage (number/total). US = ultrasound; GS = gray-scale; PD = power Doppler; MCP = metacarpophalangeal; PIP = proximal interphalangeal; MTP = metatarsophalangeal.
†
Posterior glenohumeral joint.
‡
Olecranon fossa.
§
Tibiotalar joint.