Table 1

Baseline characteristics of the subjects completing the 3-year follow-up

Age (years) (mean±SD)67±10
Women (% of cohort)72.5
BMI (kg/m2, mean±SD)30±5
BMI <30 kg/m2 (%)55.6
Disease duration (years)6±7
Pain on VAS (mm)63±18
K&L score:
 Grade ≤2 (% patients)44.6
 Grade 3–4 (% patients)55.4
Joint effusion (moderate–severe) at clinical examination (% patients)34.1
US hydarthrodial effusion (% patients with effusion depth ≥4 mm)41.3
US synovitis (% patients with synovial thickness ≥4 mm and diffuse or nodular appearance)16.6
  • BMI, body mass index; K&L, Kellgren and Lawrence; US, ultrasonography; VAS, visual analogue scale.