Table 2 Frequency of individual joint involvement at presentation (percentage)
From: Juvenile Psoriatic Arthritis (JPsA): juvenile arthritis with psoriasis?
ERA N=16 | Persistent oligoarticular course N=44 | Extended oligoarticular course N=21 | RF-N=34 | polyarticular course N=55 | Total cohort N=115 | P value | |
|---|---|---|---|---|---|---|---|
Knee | 6 (37.5) | 32 (72.7) | 15 (71) | 24 (70) | 39(70) | 77 (66.9) | 0.06 |
Ankle | 5 (31.2) | 9 (20.4) | 7 (33) | 17 (50) | 24(44) | 38 (33.0) | 0.05 |
Subtalar | 2 (12.5) | 3 (6.8) | 3 (14.3) | 5 (14.7) | 8(14.5) | 13 (11.3) | 0.7 |
Hip | 5 (31.2) | 5 (11.4) | 0 (0) | 0 (0) | 0(0) | 10 (8.7) | 0.0012 |
Shoulder | 1 (6.2) | 1 (2.3) | 1 (4.7) | 3 (8.8) | 4(7) | 6 (5.2) | 0.63 |
Elbow | 1 (6.2) | 3 (6.8) | 3 (14.3) | 9 (26.5) | 12(21.8) | 16 (13.9) | 0.07 |
Wrist | 1 (6.2) | 4 (9.0) | 7 (33) | 13 (38.2) | 20(36.3) | 25 (21.7) | 0.038 |
MCP | 2 (12.5) | 3 (6.8) | 2 (9.5) | 12 (35.3) | 14(25.4) | 19 (16.5) | 0.005 |
PIP of Hand | 3 (18.7) | 6 (13.6) | 2 (9.5) | 18 (52.9) | 20(36.3) | 29 (25.2) | 0.0002 |
DIP of Hand | 2 (12.5) | 2 (4.6) | 0 (0) | 6 (17.6) | 6(10.9) | 10 (8.7) | 0.08 |
TMJ | 1 (6.2) | 2 (4.6) | 6 (17.6) | 6 (17.6) | 6(10.9) | 9 (7.8) | 0.07 |
Cervical spine | 0 (0) | 2 (4.6) | 0 (0) | 0 (0) | 1(1.8) | 2 (1.7) | 0.50 |
Sacroiliac | 5 (31.2) | 0 (0) | 0 (0) | 0 (0) | 0(0) | 5 (4.3) | <0.0001 |
Any small joint* | 6 (37.5) | 12 (27.3) | 5 (24) | 25 (73.5) | 30(54.5) | 48 (41.7) | 0.0001 |