Table 2 Ultrasound findings by disease status

All joints

21 (48.8 %)

8 (40 %)

4 (8.9 %)*

MCP

3 (5.2 %)

1 (1.31 %)

0 (0 %)*

Knee

12 (15.8 %)

6 (30 %)

2 (4.4 %)*

Ankle

7 (11.3 %)

7 (35 %)**

0 (0 %)*

1^st MTP

17 (22.4 %)

8 (40 %)

2 (4.4 %)*

All entheseal sites

63 (82.9 %)

20 (100 %)

13 (28.9 %)*

Quadriceps tendon

31 (40.8 %)

11 (55 %)

2 (4.4 %)*

Patellar tendon

51 (67.1 %)

19 (95 %)**

2 (4.4 %)*

Achilles tendon

33 (43.4 %)

13 (65 %)

5 (11.1 %)*

Plantar fascia

19 (25 %)

12 (60 %)**

2 (4.4 %)*

Entheseal power Doppler

25 (32.9 %)

11 (55 %)

0 (0 %)*