Table 2.
Ultrasound pathologies detected exclusively by dorsal or palmar/plantar scans of hand and foot joints and scans of different knee recesses
| Erosion | Osteophyte | GSS | PD-j | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dorsal only | Palmar/plantar only | Total | Dorsal only | Palmar/plantar only | Total | Dorsal only | Palmar/plantar only | Total | Dorsal only | Palmar/plantar only | Total | |||||||||
| Grade (range 0 to 3) | 1 | 2 to 3 | 1 | 2 to 3 | 1 to 3 | 1 to 3 | 2 to 3 | 1 | 1 to 3 | 1 to 3 | 1 | 1 to 3 | 1 | 2 to 3 | 1 to 3 | 1 | 2 to 3 | 1 | 2 to 3 | 1 to 3 |
| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | |
| H-PIP + H-DIP | 6 (13.0) | 8(17.4) | 18(39.1) | 12(26.1) | 46(100) | 117(19.5) | 20(3.3) | 124(20.6) | 10(1.7) | 601(100) | 35(17.3) | 14(6.9) | 101(50.0) | 25(12.4) | 202(100) | 10(22.2) | 8(17.8) | 14(31.1) | 4(8.9) | 45(100) |
| MTP | 6(8.3) | 32(44.4) | 0 | 14(19.4) | 72(100) | 56(26.4) | 49(23.1) | 4(1.9) | 1(0.5) | 212(100) | 37(42.1) | 39(44.3) | 3(3.5) | 1(1.1) | 88(100) | 14(50.0) | 13(46.4) | 0 | 0 | 28(100) |
| F-PIP + F-DIP | 8(34.8) | 7(30.4) | 0 | 6(26.1) | 23(100) | 74(27.8) | 36(13.5) | 25(9.4) | 11(4.1) | 266(100) | 36(53.7) | 9(13.4) | 9(13.4) | 2(3.0) | 67(100) | 9(37.5) | 10(41.7) | 1(4.2) | 3(12.5) | 24(100) |
| Wrist | - | - | - | - | - | - | - | - | - | - | 47(51.7) | 15(16.5) | 1(1.1) | 4(4.4) | 91(100) | 21(51.2) | 11(26.8) | 2(4.9) | 0 | 41(100) |
| Medial/lat. | Suprapat. | Medial/lat. | Suprapat. | |||||||||||||||||
| Knees | 20(26.3) | 9(11.8) | 15(19.7) | 0 | 76(100) | 10(34.5) | 9(31.0) | 10(34.5) | 2(6.9) | 29(100) | ||||||||||
The table depicts the number of joints at which the indicated ultrasound lesion [that is, erosions, osteophytes, grey scale synovitis (GSS) or Power Doppler signals (PD-j)] and the respective grading (1 or 2 to 3) were exclusively identified by dorsal (Dorsal only) or palmar/plantar (Palmar/plantar only) scans. Total refers to the overall number of joints positive for the specific ultrasound abnormality (irrespective of whether it was identified by dorsal, palmar/plantar or both scans). We conducted separate analyses for small finger joints except metacarpophalangeal joints (H-PIP + H-DIP), small joints of feet (MTP or F-PIP + F-DIP) and wrists. At the knees, we compared medial plus lateral (Medial/lat.) versus suprapatellar (Suprapat.) scans. Data in parenthesis reflect the percentage of positive joints out of the total number of joints revealing the indicated ultrasound finding. F-DIP, distal interphalangeal joint of the feet; F-PIP, proximal interphalangeal joint of the feet, GSS, grey scale synovitis; H-DIP, distal interphalangeal joint of hands; H-PIP, proximal interphalangeal joint of hands; MTP, metatarsophalangeal joint; PD-j, power Doppler at joints; T, total number of patients with the specific lesion; hyphens indicate “not assessed”.