SURFACE TREATMENT

摘要

A method for improving the wear resistance of a wear surface of a medical prosthetic device wherein the wear surface comprises plastics material, the method comprising subjecting a surface region of the wear surface to plasma treatment. The plastics material may be UHMWPE and the surface region is cross-linked to a depth of at least 0.3 mu m as detectable by the presence of IR absorption bands at 2890 cm<-1>.