This study is a multicentre, ambidirectional, observational cohort study. The ambidirectional design incorporates both the collection of retrospective data from the three years prior to enrolment, and a prospective follow-up period of up to two years. The study is designed to evaluate the long-term effects of Integrated Medicine on radiographic progression in patients diagnosed with Ankylosing spondylitis (AS).
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The change in Spondyloarthritis Research Consortium of Canada (SPARCC) scores from baseline to 12 months
Timeframe: Review the imaging data from up to three years prior to enrolment and assessed annually in the two-year follow-up period ahead.