title: [Clinical staging of ankylosing spondylitis].
abstract: OBJECTIVE
  To compare the chronic changes between the sacroiliac joints (SIJ) and the spine or the hip joints in conventional radiography of patients with ankylosing spondylitis (AS) and discuss the clinical staging of this disease.
  
  
  METHODS
  All images of the joints of the AS patients were evaluated twice in blinded manner by two doctors. The cervical spine, lumbar spine, sacroiliac joints and hip joints were separately evaluated by BASRI, and the results were averaged and analyzed. Definite involvement was defined as a score > or=2.
  
  
  RESULTS
  Thirty-seven AS patients (81.0% male with mean age of 28.49 years) were examined, and 81.0% of them had definite involvement of the spine and 40.5% of hip involvement. Pearson product-moment correlation coefficient was 0.459 between BASRI-SIJ and BASRI-s, and 0.465 between BASRI-SIJ and BASRI-h.
  
  
  CONCLUSIONS
  Separately, the severity of SIJ changes can not represent the severity of changes in the spine and hip, etc, therefore SIJ changes may not be sufficient evidence for AS staging.
authors.affiliation: College of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China. liaozp999@yahoo.com.cn
authors.forename: Zhi-peng
authors.initials: ZP
authors.lastname: Liao
authors.forename: Qing-chun
authors.initials: QC
authors.lastname: Wang
authors.forename: Qiu-ping
authors.initials: QP
authors.lastname: Xie
authors.forename: Ming-bo
authors.initials: MB
authors.lastname: Tian
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006621:Hip Joint / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012720:Severity of Illness Index; D013131:Spine / Q000473:pathology*; D013167:Spondylitis, Ankylosing / Q000145:classification / Q000473:pathology*