Table 5 Abnormalities detected at US scans reported as making a difference to diagnosis at that clinic visit. US abnormalities were commonly found at both sets of MCPs, PIPs and wrists. Lower limb joints are under represented in the ultrasound data set
Jointa | No. (%) joint scanned (n = 68)b | No. (%)c with US abnormality | No. (%) ST only | No. (%) ST + PD |
|---|---|---|---|---|
MCP1 L | 47 (69.1%) | 6 (12.8%) | 5 (10.6%) | 1 (2.1%) |
MCP2 L | 53 (77.9%) | 19 (35.8%) | 6 (11.3%) | 13 (24.5%) |
MCP3 L | 51 (75.0%) | 29 (56.9%) | 17 (33.3%) | 12 (23.5%) |
MCP4 L | 49 (72.1%) | 21 (42.9%) | 16 (32.7%) | 5 (10.2%) |
MCP5 L | 50 (73.5%) | 8 (16.0%) | 1 (2.0%) | 7 (14.0%) |
MCP1 R | 47 (69.1%) | 3 (6.4%) | 3 (6.4%) | 0 (0.0%) |
MCP2 R | 52 (76.5%) | 16 (30.8%) | 2 (3.8%) | 14 (26.9%) |
MCP3 R | 53 (77.9%) | 20 (37.7%) | 9 (17.0%) | 11 (20.8%) |
MCP4 R | 48 (70.6%) | 16 (33.3%) | 9 (18.8%) | 7 (14.6%) |
MCP5 R | 48 (70.6%) | 11 (22.9%) | 1 (2.1%) | 10 (20.8%) |
IP L | 31 (45.6%) | 1 (3.2%) | 0 (0.0%) | 1 (3.2%) |
PIP2 L | 40 (58.8%) | 9 (22.5%) | 2 (5.0%) | 7 (17.5%) |
PIP3 L | 39 (57.4%) | 10 (25.6%) | 4 (10.3%) | 6 (15.4%) |
PIP4 L | 37 (54.4%) | 9 (24.3%) | 3 (8.1%) | 6 (16.2%) |
PIP5 L | 36 (52.9%) | 9 (25.0%) | 3 (8.3%) | 6 (16.7%) |
IP R | 33 (48.5%) | 1 (3.0%) | 0 (0.0%) | 1 (3.0%) |
PIP2 R | 39 (57.4%) | 10 (25.6%) | 4 (10.3%) | 6 (15.4%) |
PIP3 R | 39 (57.4%) | 15 (38.5%) | 9 (23.1%) | 6 (15.4%) |
PIP4 R | 35 (51.5%) | 8 (22.9%) | 3 (8.6%) | 5 (14.3%) |
PIP5 R | 36 (52.9%) | 8 (22.2%) | 3 (8.3%) | 5 (13.9%) |
Wrist L | 52 (76.5%) | 18 (34.6%) | 3 (5.8%) | 15 (28.8%) |
Wrist R | 49 (72.1%) | 19 (38.8%) | 7 (14.3%) | 12 (24.5%) |
MTPs L | 5 (7.4%) | 5 (100.0%) | 3 (60.0%) | 2 (40.0%) |
MTPs R | 7 (10.3%) | 7 (100.0%) | 5 (71.4%) | 2 (28.6%) |