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Table 3 Scoring of ultrasound abnormalities according to joint region

From: Ultrasound verified inflammation and structural damage in patients with hereditary haemochromatosis-related arthropathy

  HH-WA HH-A HOA
Erosion score
 MCP 0 (0–5) 0 (0–7) 0 (0–7)
 PIP 0 (0–1) 0 (0–2) 0 (0–4)
 DIP 0 0 0 (0–4)
Osteophyte score
 MCP 4.5 (0–25) 12.5 (0–30)** ¥¥ 5 (0–18)
 PIP 5 (0–16) ¥¥¥ 10 (0–28)¥ 14 (2–30)
 DIP 7.5 (0–13) ¥¥¥ 8 (1–17)¥¥¥ 16 (2–24)
 Hip 2 (0–5) ¥¥¥ 1 (0–6)¥¥¥ 0 (0–4)
 Knee 1.5 (0–5) 2 (0–6) 1 (0–6)
Grey scale synovitis score
 MCP 2 (0–12) ¥¥ 3 (0–13)¥¥¥ 1 (0–5)
 PIP 1 (0–12) ¥¥ 1.5 (0–12) 4 (0–16)
 DIP 0 (0–5) ¥¥¥ 1 (0–6)¥¥¥ 5 (0–14)
 Wrist 1 (0–4) 2 (0–4)* ¥¥ 0 (0–4)
 Hip 0 (0–1) 0 (0–2) 0 (0–1)
 Knee 0 (0–2) 0 (0–5) 0 (0–2)
 Ankle 0 (0–3) 0 (0–2) 0 (0–1)
Power Doppler synovitis score
 MCP 0 (0–5) 1.5 (0–11)** ¥¥¥ 0 (0–2)
 PIP 0 (0–3) 0 (0–6) 0 (0–9)
 DIP 0 (0–2) 0 (0–1) 0 (0–5)
 Wrist 0 (0–2) 1 (0–5) 0 (0–4)
 Hip 0 (0–1) 0 0
 Knee 0 (0–1) 0 (0–4) 0 (0–1)
 Ankle 0 (0–2) 0 (0–3) 0
Grey scale tenosynovitis score
 MCP 0 (0–2) 0 (0–1) 0 (0–3)
 PIP 0 (0–5) 0 (0–4) 0 (0–1)
 DIP 0 0 0 (0–1)
 Wrist 0 (0–2) 0 (0–1) 0 (0–1)
 Ankle 0 0 0
Power Doppler tenosynovitis score
 MCP 0 0 0 (0–3)
 PIP 0 0 (0–3) 0 (0–3)
 DIP 0 0 0
 Wrist 0 0 0 (0–2)
 Ankle 0 0 0
  1. Data indicate the median ultrasound score (range)
  2. HH-A hereditary haemochromatosis with arthropathy, HH-WA hereditary haemochromatosis without arthropathy, HOA hand osteoarthritis, MCP metacarpophalangeal joints, PIP proximal interphalangeal joints, DIP distal interphalangeal joints
  3. *p < 0.05 and **p ≤ 0.01 compared to HH-WA, ¥ p < 0.05, ¥¥ p ≤ 0.01 and ¥¥¥ p ≤ 0.001 compared to HOA; p values are not adjusted for multiple testing