Preferential location of abnormal US finding and related grading
| Joint | Number of joint examined | Number of joint with ≥1 US abnormality | GS synovial effusion | GS SH | Power Doppler* | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| G1 | G2 | G3 | G1 | G2 | G3 | G1 | G2 | G3 | |||
| MCP1 | 414 | 2 | 1 | – | – | 1 | – | – | 1 | – | – |
| MCP2 | 414 | 3 | – | – | – | 3 | – | – | 1 | – | – |
| MCP3 | 414 | 8 | – | – | – | 8 | – | – | 1 | – | – |
| MCP4 | 414 | 5 | 1 | – | – | 4 | – | – | 1 | – | – |
| Wrist | 411 | 24 | 10 | – | – | 14 | – | – | 6 | – | – |
| MTP1 | 414 | 195 | 116† | 7 | – | 51† | 23 | 4 | 23 | 6 | 2 |
| MTP2 | 414 | 167 | 126 | 4 | – | 9 | 21 | 7 | 1 | – | – |
| MTP3 | 414 | 119 | 92 | 3 | – | 6 | 18 | – | 1 | – | – |
| MTP4 | 414 | 60 | 47 | – | – | 8 | 5 | – | 1 | – | – |
| MTP5 | 414 | 3 | – | 2 | – | 1 | – | – | – | – | – |
| Total | 6621 | 586 | 393 | 16 | 0 | 105 | 67 | 11 | 36 | 6 | 2 |
*Intrasynovial PD related to SH.
†Six MTP1 presented both GS SE and SH.
G1, grade 1; G2, grade 2; G3, grade 3; GS, grey scale; MCP, metacarpophalangeal joint; MTP, metatarsophalangeal joint; PD, power Doppler; SE, synovial effusion; SH, synovial hypertrophy; US, ultrasound.