Fig. 1From: Association between changes in molecular biomarkers of cartilage matrix turnover and changes in knee articular cartilage: a longitudinal pilot studyMean ± standard deviation levels of serum (CILP-2 (a), COMP (b), sC2C (c) and CPII (d)) biomarkers at baseline and 2 years follow up. NS: no significant difference between time pointsBack to article page