The presence of erosive joints is a strong predictor of radiological progression in hand osteoarthritis: results of a 2-year prospective follow-up of the Liège Hand Osteoarthritis Cohort (LIHOC)

Table 3 Radiological evolution of hand osteoarthritis over 2 years

Variables	Baseline, n = 203					At 2 years, n = 176					p
Variables	Mean	SD	Median	P25	P75	Mean	SD	Median	P25	P75	p
VV score (0–218.4)	37.61	27.01	31.18	20.86	47.97	46.40	29.51	37.45	26.66	59.62	< 0.01
KL score (0–128)	52.49	20.17	54	40	66	60.04	19.67	59	49	74	< 0.01
Number of the erosive joints (phase E or R, VV score)	1.98	3.48	0	0	2	2.36	3.94	0	0	4	< 0.01
Erosive HOA	40.91%					44.32%					< 0.01

Abbreviations: KL Kellgren-Lawrence, SD standard deviation, VV Verbruggen-Veys

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