New materials and design refinements were conceived to reduce wear while retaining the proven design and modularity that surgeons have depended on for nearly two decades.

The highly polished cobalt chrome tray offers a smoother surface, reducing friction and long-term wear.

Moderately cross-linked, oxidatively stable polyethylene aids to ensure excellent wear performance. The tray and insert have a secure fit that decreases micromotion while maintaining the system’s modular flexibility.

First implanted in 1984, the core design has successfully evolved once again. With the launch of these high performance bearings, Cobalt Chrome Tray delivers a two-piece tibial construct that approaches the performance of a one-piece design.

Highly polished cobalt chrome tray creates a smooth surface.
Tighter fit between insert and tray reduces potential micromotion.
Moderately cross-linked, oxidatively stable polyethylene reduces wear.

As part of the i2 locking mechanism, the P.F.C.®Sigma® highly polished cobalt chrome tray is designed to help reduce polyethylene wear.

• Polyethylene-friendly, highly polished cobalt chrome minimizes abrasion.
• Cobalt chrome construct: fatigue strength comparable to forged titanium.
• Highly polished cobalt chrome tray creates a smooth surface
• Consistent
• Tray Thickness
• Stem and Keel design
• Underside surface finish consistent with fixation clinical history