Fig. 2

a, b Changes from baseline at each evaluation time point for the patient’s assessment of global hand pain by Visual Analogue Score (VAS, 0–100 mm) (a) and Functional Index for Hand Osteoarthritis (FIHOA) score (b) in the study groups. The arrows indicate the i.a. injections

**p < 0.01; ***p < 0.001 (Wilcoxon rank-sum test) Sinovial H-L Group vs Triamcinolone Group