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Table 2 Quantitative assessment of MRI findings as graded by the central readers

From: Achilles tendon enthesitis evaluated by MRI assessments in patients with axial spondyloarthritis and psoriatic arthritis: a report of the methodology of the ACHILLES trial

Parameter Name Value Range
Bone oedema, PsAMRIS 0 = absent
1 = 1–33%
2 = 34–66%
3 = ≥ 67%
Bone oedema, adapted to heel 0 = absent
1a = 1–33% with oedema length ≤ 0.5 cm
1b = 1–33% with oedema length > 0.5 cm
2 = 34–66%
3 = ≥ 67%
Bone erosion, PsAMRIS 0 = absent
1 = 1–10%
2 = 11–20%
3 = 21–30%
10 = 91–100%
  1. MRI Magnetic resonance imaging, PsAMRIS Outcome Measures in Rheumatology psoriatic arthritis MRI scoring system