HIP JOINT PROSTHESIS HAVING A ZIRCONIA HEAD AND A CERAMIC CUP

摘要

This invention relates to a biojoint prosthesis comprising: ;a) a prosthetic comprising a first component having an outer surface comprising at least 90 mol % zirconia, and ;b) a second component having a surface shaped to receive the outer surface of the first component, ;wherein the outer surface of the first component is received on the surface of the second component, and ;wherein a) at least a portion of the surface of the second component receiving the first component comprises a ceramic having a surface roughness of no more than 100 nm, and b) the outer surface of the first component has a surface roughness of no more than 100 nm.