AimThe aim is to describe the epidemiology, associations, and impact of inflammatory arthritis (IA) in systemic sclerosis (SSc).MethodsSSc patients prospectively enrolled in the Australian Scleroderma Cohort Study were included. IA was defined clinically as the presence of synovitis on examination. Logistic regression was used to determine the associations of IA with SSc manifestations and serological parameters. Patient reported outcome measures were used to capture physical function and health related quality of life (HRQoL).ResultsIA was a common SSc manifestation affecting one‐third (33.3%) of patients over a median follow‐up of 4.3 (1.7‐8.4) years. Associations of IA included diffuse SSc (OR 1.33, 95%CI 1.01‐1.74, p=0.042); concurrent musculoskeletal manifestations (joint contractures and tendon friction rubs, OR 1.70, 95%CI 1.34‐2.15, p<0.001); myositis (OR 2.11, 95%CI 1.39‐3.20, p<0.001); and sicca symptoms (OR 1.57, 95%CI 1.14‐2.16, p=0.006), whilst IA was negatively associated with PAH (OR 0.52, 95% CI 0.35‐0.78, p=0.002). Neither the presence of RhF nor U1RNP were associated with IA (OR 1.13, 95%CI 0.88‐1.44, p=0.331, OR 1.46, 95%CI 0.89‐2.39, p=0.129 respectively). Positive anti‐cyclic citrullinated protein antibodies, although at low frequency, were more common in those with IA compared to those without IA (7.5% vs 1.5%, p<0.001). IA was associated with significantly lower HRQoL score (p<0.001) and more physical disability than in those without IA (p<0.001).ConclusionIA is a common SSc disease manifestation that is more frequently seen diffuse disease. IA is associated with poor HRQoL and physical disability. Further research is needed into the effective management of IA in SSc.