Levels of chondroitin sulfate isomers in synovial fluid of patients with hip osteoarthritis

We determined the levels of chondroitin sulfate (CS) isomers in the synovial fluid of patients with hip osteoarthritis (OA) to investigate their significance as markers reflecting extracellular matrix metabolism in joint tissues. A cross-sectional study of synovial fluid aspirated from 50 hip joints of 50 patients with OA was performed. Concentrations of chondroitin-4-sulfate (C4S) and chondroitin-6-sulfate (C6S) were determined by...