Table 2.

SPINEACHE: a mnemonic for the clinical parameters of the ASAS classification for axial spondyloarthritis.

Sacroiliitis on Imaging (by radiograph or MRI) + ≥ 1 clinical measure
HLA-B27 + ≥ 2 other clinical measures
Clinical measures
  Sausage digit (dactylitis)
  Psoriasis-positive family history of SpA
  Inflammatory back pain
  NSAID good response
  Enthesitis (heel)
  Crohn’s/colitis disease — elevated CRP
  Eye (uveitis)
  • MRI: magnetic resonance imaging; NSAID: nonsteroidal antiinflammatory drugs; CRP: C-reactive protein