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Percentages of different WORMS-score categories for the MT and cMF plate are plotted against K/L grade (males and females). WORMS-score categories 0 and 1 represents unimpaired cartilage, score 2, 2.5 or 3 signify focal thinning/erosions in small areas, and WORMS scores equal or greater than 4 indicate diffuse cartilage thinning.
