Background Enthesitis is one of the assessment parameters of the patients with Ankylosing spondylitis (AS). Many indexes are used in the evaluation of the severity of enthesitis and there are several studies investigating the relationship between severity of enthesitis and clinical and laboratory parameters. Spondyloarthritis Research Consortium of Canada Enthesitis (SPARCC) index is feasible and reliable for measurement of enthesitis severity.
Objectives The aim of this study was to investigate the relationship between SPARCC index and disease activity and health related quality of life (QoL) in patients with AS.
Methods Eighty six AS patients were included in the study. Pain by visual analogue scale (pain VAS-rest and activity), disease activity by Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), functional capacity by Bath Ankylosing Spondylitis Functional Index (BASFI), enthesitis severity by SPARCC index, QoL by short form-36 (SF-36), and Bath Ankylosing Spondylitis Metrology Index (BASMI) were assessed in patients. In the laboratory evaluations, the erythrocyte sedimentation rates (ESR) and serum C-reactive protein levels of the patients were determined. Descriptive statistics and Spearman tests were used for statistical analysis.
Results All participants were aged between 18 and 65 years, with a mean age of 36.9±11.13 years. The most frequent region of enthesopaties was Achilles tendon insertion into calcaneum (55.8%). SPARCC index was significantly correlated with pain VAS-rest, BASDAI, and BASFI (p<0.001). There was also positive correlation between SPARCC index and pain VAS-activity (p<0.05). There was no relation between SPARCC index and BASMI or laboratory parameters (p>0.05).
Conclusions The clinical assessment of enthesitis in AS is an important outcome measure, and enthesitis indexes such as SPARCC enthesitis index can be valuable tool in the evaluation of disease activity in patients with AS.
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Disclosure of Interest None Declared
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