Prosthesis with biologically inert wear resistant surface

Details Prosthesis with biologically inert wear resistant surface Prosthesis with biologically inert wear resistant surface

A - Human Necessities

61

F

A61F 2/28 (2006.01) A61F 2/30 (2006.01) A61F 2/36 (2006.01) A61L 27/06 (2006.01) A61L 27/30 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2076786

A prosthesis is provided having at least a smooth non- articulating load bearing surface disposed adjacent a bone. The prosthesis includes a substrate formed from a metallic alloy. At least the regions of the substrate defining the load bearing surface are coated with a biologically inert abrasion resistant material harder than the substrate for preventing leaching of ions from the substrate into adjacent body tissue and for preventing wear. The coating may be titanium nitride or zirconium or other such material exhibiting biological inertness and acceptable hardness. The coating preferably defines a thickness of 8-10 microns.

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