Skip to main content

Table 3 Comparison of enthesitis aspects and rotator cuff tendon disorders between patient and control shoulders

From: Ultrasound features of shoulder involvement in patients with ankylosing spondylitis: a case–control study

 

AS shoulders

Control shoulders

P

(n = 76)

(n = 76)

Supraspinatus enthesitis

   

 Doppler

1 (1.3%)

0 (0)

1

 Enthesophytosis

4 (5.3%)

0 (0)

0.12

 Bony erosion

30 (39.5%)

5 (6.6)

<0.001

 Thickening

2 (2.6%)

0 (0)

0.49

Subscapularis enthesitis

   

 Doppler

0(0)

0(0)

1

 Enthesophytosis

1 (1.3%)

0 (0)

<0.001

 Bony erosion

22 (28.9%)

2 (2.6%)

1

 Thickening

1 (1.3%)

0 (0)

Infraspinatus enthesitis

   

 Doppler

0(0)

0 (0)

1

 Enthesophytosis

1 (1.3%)

0 (0)

<0.001

 Bony erosion

21 (27.6%)

1 (1.3%)

 Thickening

0 (0)

0 (0)

Supraspinatus tendon

   

 Partial tear

10 (13.2%)

0 (0)

0.001

 Full tear

2 (2.6%)

0 (0)

0.49

 Calcification

4 (5.3%)

4 (5.3%)

1

 Doppler

0 (0)

0 (0)

Infraspinatus tendon

   

 Partial tear

6 (7.9%)

0 (0)

0.028

 Full tear

1 (1.3)

0 (0)

1

 Calcifications

2 (2.6%)

2 (2.6%)

1

 Doppler

0 (0)

0 (0)

Subscapularis tendon

   

 Partial tear

8 (10.5%)

0 (0)

0.006*

 Full tear

1 (1.3%)

0 (0)

1

 Calcifications

3 (3.9%)

3 (3.9%)

1

 Doppler

0 (0)

0 (0)

  1. *exact Fisher’s test.
  2. Results are expressed by number (percentage).