title: [Ankylosing spondylitis in Shantou: clinical experience in fifteen years].
abstract: OBJECTIVE
  To evaluate the clinical features of ankylosing spondylitis (AS) in Shantou area and improve the diagnostic level and therapeutic effect.
  
  
  METHODS
  Clinical and laboratory data, and the methods and effects of therapy were analyzed. Some patients were followed up.
  
  
  RESULTS
  94% of the cases had an insidious onset. Low back pain or discomfort, peripheral arthritis, positive "4" test and pressing tenderness over the sacroiliac joints and lumbar spine were the frequent symptoms and signs. The degree of sacroiliitis and involvement of hip and spine were related to the disease duration. However, hip joint involvement in juvenile onset AS did not relate to the disease duration. Some cases with disease duration as long as 16 years still remained at II of degree sacroiliitis. Clinical improvement was more obvious in the first two years of treatment. Although some patients came to a standstill condition after this period, yet the disease activity might still relapse with withdrawal of the treatment. The rate of adhering to the treatment for 1, 2, and over 5 years was 34.6%, 28.4%, and 10.3% respectively. The radiological changes frequently did not parallel with the clinical manifestations.
  
  
  CONCLUSIONS
  Early diagnosis is of importance in improving the prognosis of AS and adherence to slow-acting anti-rheumatic drug therapy is beneficial in disease controlling. A follow up of more than 3 years is necessary to estimate the therapeutic efficacy, and the radiological change is the key indicator. AS is a heterogenic disease and the risk factors for prognosis should be further studied.
authors.affiliation: The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515031.
authors.forename: Q
authors.initials: Q
authors.lastname: Zeng
authors.forename: S
authors.initials: S
authors.lastname: Chen
authors.forename: J
authors.initials: J
authors.lastname: Xu
authors.forename: Z
authors.initials: Z
authors.lastname: Xiao
authors.forename: L
authors.initials: L
authors.lastname: Lin
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: S
authors.initials: S
authors.lastname: Huang
authors.forename: S
authors.initials: S
authors.lastname: Xie
mesh_terms: D000293:Adolescent; D000328:Adult; D018501:Antirheumatic Agents / Q000627:therapeutic use*; D002648:Child; D042241:Early Diagnosis; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011859:Radiography; D013167:Spondylitis, Ankylosing / Q000000981:diagnostic imaging / Q000188:drug therapy*; D016896:Treatment Outcome
chemical_list: D018501:Antirheumatic Agents