The relationship between inflammation and new bone formation in patients with ankylosing spondylitis

Table 1 Baseline data on inflammation and occurrence of definite radiographic damage as assessed by both magnetic resonance imaging sequences

MRI sequence	Inflammation/radiographic damage	Proportion (number) of vertebral edges at baseline	P value
STIR	Any inflammatory lesions	16.6% (153/922)	-
	No inflammatory lesions	83.4% (769/922)
	Definite radiographic damage with inflammation	17.6% (27/153)	0.53
	Definite radiographic damage without inflammation	15.6% (120/769)
T1-post-Gd	Any inflammatory lesions	10.3% (95/922)	-
	No inflammatory lesions	89.7% (827/922)
	Definite radiographic damage with inflammation	21.1% (20/95)	0.13
	Definite radiographic damage without inflammation	15.1% (125/827)

There was no difference in the proportion of inflammatory lesions and occurrence or absence of syndesmophytes at baseline. MRI, magnetic resonance imaging; STIR, short-tau-inversion-recovery; T1-post-Gd, T1-post-gadolinium.

ISSN: 1478-6362