Figure 1From: Relationship between radiographic grading of osteoarthritis and the biochemical markers for arthritis in knee osteoarthritisRelationship between Kellgren–Lawrence grading (KL), joint space width (JSW) and biochemical markers. Pyridinoline (Pyr) level is expressed as nmol/mmol creatinine. There were significant relationships between joint space width (P = 0.003), pyridinoline (P = 0.034) and TIMP-1 (P = 0.017) determined with the Kruskal–Wallis test. Bars indicate maximum and minimum values within the observation range. P values are shown in each panel; N.S. indicates not significant. CRP, C-reactive protein; MMP, matrix metalloproteinase; TIMP, tissue inhibitor of metalloproteinases.Back to article page