Table 1 Comparison of characteristics and ultrasound results between AS patients and control subjects
Patients | Control subjects | p | |
|---|---|---|---|
(n = 38) | (n = 38) | ||
Age (years) | 36.8 ± 10.7 | 36.9 ± 10,6 | 0.95 |
Sex: males | 22 (57.9) | 22 (57.9) | 1 |
Disease duration (years) | 9.6 ± 7.2 | ||
Previous treatment | |||
NSAIDs | 26 (68.4) | ||
Methotrexate | 3 (7.9) | ||
Sulfasalazine | 8 (21.1) | ||
Anti-TNF drugs | 1 (2.6) | ||
Current treatment | |||
NSAIDs | 22 (57.9) | ||
Methotrexate | 1 (2.6) | ||
Sulfasalazine | 2 (5.3) | ||
Anti-TNF drugs | 13 (34.2) | ||
AS subtypes | |||
Isolated axial disease | 10 (26.3%) | ||
Axial and enthesic | 9 (23.7%) | ||
Axial with peripheral | 5 (13.2) | ||
Axial and enthesic and peripheral | 14 (36.8) | ||
Pain of shoulder | 19 (50) | ||
coxitis | 21 (55.3) | ||
BASDAI | 4.9 ± 1.9 | ||
BASFI | 5.1 ± 2.9 | ||
Enthese involvement | 26 (68.4) | 8 (21.1) | <0.001 |
Supraspinatus | 22 (57.9) | 5 (13,2) | <0.001 |
Subscapularis | 14 (36.8) | 1 (2.6) | <0.001 |
Infraspinatus | 15 (39.5) | 3 (7.9) | 0.001 |
Multiple enthesitis | 14 (36.8) | 0 (0) | <0.001 |
Bilateral enthesitis | 17 (44.7) | 0 (0) | 0.003* |
Rotator cuff tendinopathy | 16 (42.1) | 6 (15.8) | 0.01 |
Supraspinatus | 11 (28.9) | 3 (7.9) | 0.01 |
Subscapularis | 5 (13.2) | 1 (2.6) | 0.20* |
Infraspinatus | 8 (21.1) | 3 (7.9) | 0.10 |
Biceps tenosynovitis | 5 (13.2) | 0 (0) | 0.05* |
Bilateral involvement | 12 (31.5) | 1 (2.6) | 0.02* |
Gleno-humeral joint | |||
Synovitis | 1 (2.6) | 0 (0) | 1* |
erosion | 1 (2.6) | 0 (0) | 1* |
Acromio-claviculaire joint | |||
Erosion | 0 (0) | 3 (7.9) | 0.24* |
synovitis | 0 (0) | 0 (0) | |
subacromial bursitis | 0 (0) | 0 (0) |