Bidirectional Cohort Study of Nanfang Spondyloarthritis

In this study, on the basis of not imposing randomized or interventional treatments and not generating additional examination tests on patients, the chronic disease data formed by multiple visits of SpA patients using conventional treatment regimens were used to form a bi-directional, disease-specific cohort by means of data entry alone, consisting of: one SpA condition information dataset, one SpA imaging dataset. SpA condition information dataset: enter the disease duration, symptom characteristics, family history, comorbidities, previous medication use and efficacy of all outpatient diagnosed SpA patients; for each natural visit time point, establish BASDAI and ASDASCRP scores to assess the disease activity, assess the patient's physical functioning by BASFI scale, and EQ-5D and SF-36 scales to assess the quality of life; Recorded labs for each visit such as CRP, ESR and anti-streptococcal hemolysin O (ASO), anti-streptococcal DNAase B (ADNS). The subject group will not direct patients to lab tests that are not prescribed by the attending physician. SpA imaging dataset: all imaging data of patients diagnosed with SpA and naturally attending our clinic were recorded, including: MRI of sacroiliac joints, MRI of hips, MRI of cervical/lumbar/thoracic spine, and orthopantomogram of pelvis, CT of sacroiliac joints, or vascular ultrasound of sacroiliac joints and lower limbs, and the imaging data were archived after preliminary SPARCC and SPARCC SSS scores were made. The subject group would not direct patients to examinations that were not prescribed by the attending physician.