GlucosamineOsteoarthritis, KneeOsteoarthritisChondroitin SulfatesAcetaminophenChondrocytesPain MeasurementHeparitin SulfateTreatment OutcomeSulfatesDermatan SulfateHexosaminesHeparan Sulfate ProteoglycansAcetylglucosamineGlycosaminoglycansChondroitin Sulfate ProteoglycansKeratan SulfateGlutamine-Fructose-6-Phosphate Transaminase (Isomerizing)Dextran SulfateChondroitinProteoglycansDisaccharidesSulfotransferasesSodium Dodecyl SulfateAmino SugarsCarbohydratesOligosaccharides