Abstract
Objective Acute anterior uveitis (AAU) is the most common extra-articular manifestation in patients with axial spondyloarthritis (axSpA). However, the relationship between AAU and radiographic progression in axSpA remains unclear. Hence, we investigated whether the presence of AAU is associated with radiographic structural damage in patients with axSpA. Methods Clinical and radiographic data were obtained from 253 patients with axSpA. Radiographic progression over 2 years was assessed using the modified Stoke Ankylosing Spondylitis Spine Score (mSASSS). Progression was defined as mSASSS worsening by ≥ two units. Using propensity score (PS) matching, differences between patients with and without AAU were analyzed. Results The proportion of progressors among patients with AAU was lower than that of patients without AAU (13.6% vs. 29.5%, p=0.058). The rate of increase in mSASSS and number of syndesmophytes were lower in patients with AAU than patients without AAU (0.57±1.37 vs. 1.02±1.79, p=0.085 and 0.46±1.45 vs. 0.83±1.62, p=0.158). In multivariate regression analysis, presence of AAU was independently associated with slowed radiographic progression (odds ratio [95% confidence interval] 0.21 [0.07, 0.67], p=0.004). Conclusion PS-matched axSpA patients with AAU showed significantly less radiographic progression than those without AAU.
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