Table 2.

Ultrasonography findings of 282 Achilles tendons

	No clinical Achilles enthesitis (n=194)	Clinical Achilles enthesitis (n=88)	p Value
Inflammatory activity	31 (16.0)	15 (17.0)	0.82
Hypoechogenicity	10 (5.2)	7 (8.0)	0.36
Tendon thickening	27 (13.9)	10 (11.4)	0.56
Power Doppler activity	2 (1.0)	1 (1.1)	1.00
Structural damage	100 (51.5)	48 (54.5)	0.64
Calcifications	77 (39.7)	35 (39.8)	0.99
Enthesophytes	51 (26.3)	26 (29.5)	0.57
Erosions at tendon insertion	4 (2.1)	0 (0)	0.31
Inflammatory activity and/or structural damage	112 (57.7)	56 (63.6)	0.35

According to X² test or Fischer's exact test as appropriate. Data are displayed as n (%).