Prostheses for knee arthroplasty, namely, articulating inserts for tibial implants

CHEMICAL PREPARATIONS USEFUL AS DISPERSING AGENTS, EMULSIFIERS, SOLUBILIZERS, AND SURFACTANTS AS IN CLEANING COMPOUNDS, COSMETICS, PAPERMAKING, PHARMACEUTICALS, TEXTILES AND OTHERS, AS A THICKENER AS IN SHAMPOOS; AS A HUMECTANT AND ALSO A PLASTICIZER AS IN ADHESIVES AND STARCH COMPOSITIONS; AND AS HIGH PRESSURE LUBRICANT AS IN METAL DRAWING OPERATIONS AND AS INGREDIENTS IN SUCH LUBRICANTS