Table 1.

The frequency of each sonographic finding categorized according to having enthesitis on physical examination (+) versus not (−) at different sites, based on the raw data obtained from 3 studies9,10,11.

VariablesEnthesitis on Physical Examination
QuadricepsPatellar ProximalPatellar DistalAchillesPlantarLat. Epicondyle
PE (+)PE (−)pPE (+)PE (−)pPE (+)PE (−)pPE (+)PE (−)pPE (+)PE (−)pPE (+)PE (−)p
Hypo., n/total (%)16/23 (69.6)144/402 (35.8)0.00113/30 (43.3)72/386 (18.7)0.0016/30 (20)91/389 (23.4)0.67122/54 (40.7)64/379 (16.9)< 0.0018/47 (17)55/382 (14.4)0.6329/24 (37.5)47/151 (31.1)0.534
Thickening, n/total (%)10/23 (43.5)106/402 (26.4)0.07318/30 (60)176/386 (45.6)0.12822/30 (73.3)247/389 (63.5)0.27914/54 (25.9)49/379 (12.9)0.00110/47 (21.3)67/375 (17.9)0.5686/23 (26.1)29/151 (19.2)0.443
Power Doppler, n/total (%)0/23 (0)21/400 (5.2)0.2602/30 (6.7)11/384 (2.9)0.2502/30 (6.7)21/387 (5.4)0.7749/54 (16.7)20/378 (5.3)0.0020/47 (0)0/375 (0)5/24 (20.8)8/151 (5.3)0.007
Enthes., n/total (%)17/21 (81)196/305 (64.3)0.12013/30 (43.3)85/296 (28.7)0.0966/30 (20)63/296 (21.3)0.87017/19 (89.5)124/144 (86.1)0.68719/45 (42.2)125/28 (44.5)0.7773/16 (18.8)48/138 (34.8)0.197
Calcif., n/total (%)2/21 (9.5)9/305 (3)0.1072/30 (6.7)4/29 (1.4)0.0390/30 (0)22/296 (7.4)0.1220/43 (0)3/283 (1.1)0.4980/4 (0)2/281 (0.7)0.5700/16 (0)11/140 (7.9)0.245
Erosion, n/total (%)1/24 (4.2)14/398 (3.5)0.8684/30 (13.3)20/386 (5.2)0.0650/30 (0)5/389 (1.3)0.5328/54 (14.8)23/379 (6.1)0.0200/47 (0)15/375 (4)0.1632/24 (8.3)11/151 (7.3)0.856
Enthes. or calcif., n/total (%)17/23 (73.9)258/400 (64.5)0.35714/30 (46.7)94/340 (27.6)0.0286/30 (20)104/389 (26.7)0.41946/54 (85.2)302/379 (79.7)0.34121/47 (44.7)179/375 (44.7)0.6939/24 (37.5)58/151 (38.4)0.932
  • US findings in this table have been analyzed as present or absent only, without any grading. The numbers are given as the numbers of positives/total number with available data (%). Data in bold face are statistically significant. The dependence between PE and US scores was assessed using chi-square or Fisher’s exact tests. The latter was used when the assumptions of the chi-square test were not met. PE: physical examination; lat: lateral; hypo.: hypoechogenicity; enthes.: enthesophytes; calcif.: calcifications.