The Klassic® Femur with Aurum® Technology features the same patented geometry and articulation as the Klassic® Femur and offers a revolutionary ballistically bonded titanium nitride (TiN) surface to provide a premium implant without the deliberate addition of common metal sensitizers such as nickel, cobalt, and chromium.
Aurum®'s IBED process ballistically bonds a five-micron (5μm) thick titanium nitride coating to the titanium substrate for increased strength, hardness, and adhesion. The IBED application uses kinetic energy versus heat to maintain a lower temperature, preserving the integrity of TiN’s strength, hardness, and adhesion.
Aurum also matches the ductility of the titanium substrate, allowing the materials to move together during the natural flexion of the implant. Competitive coatings featuring mis-matched ductility may be more brittle and may chip, crack, or flake over time.
The Klassic® Femur with Aurum® Technology has demonstrated equivalent fatigue strength to the traditional CoCr Klassic® Femur by surviving over 3000N loads.
The Aurum® process offers demonstrated best-in-class wear-resistance, abrasion-resistance, and surface hardness. Samples were first etched with sandpaper and then run 3,000,000 cycles on a wear simulator. Aurum® Femurs showed significantly less wear than cobalt chrome (CoCr) femurs.
Increased surface hardness makes Aurum® implants more resistant to scratches and wear than both cobalt chrome and Oxinium®.
Scratch adhesion testing uses a stylus that applies an increasing load to the material to determine the loads at which the coating first cracks (cohesive failure) and fully delaminates (adhesive failure). Aurum® is shown to have best-in-class scratch adhesion in both cohesive and adhesive failure modes.