Additional file 1.Relationships between articular cartilage parameters and subchondral bone mineral density (BMD). Figure S1 in Additional file 1: A figure showing Spearman correlation between cartilage damage and subchondral BMD. Figure S2 in Additional file 1: A figure showing Spearman correlation between receptor activator nuclear factor-kappaB ligand (RANKL) protein expression in articular cartilage and subchondral BMD. Figure S3 in Additional file 1: A figure showing Spearman correlation between RANKL/osteoprotegerin (OPG) ratio in articular cartilage and subchondral BMD. Format: TIFF Size: 270KB Download file MartÃnez-Calatrava et al. Arthritis Research & Therapy 2012 14:R149 doi:10.1186/ar3884 |