Sigma®XLK Poly
Your patients demand high performance implants to match their lifestyle. DePuy takes a unique approach with our innovative knee solutions by applying new materials and improvements to a clinically proven design. This has resulted in XLK poly – creating a whole new level of performance. The moderately cross-linked, oxidatively stable polyethylene insert maintains material toughness, providing excellent wear performance. A highly polished cobalt chrome tray provides a smooth surface, minimizing friction and decreasing long-term wear. Finally, the tray and insert have a secure fit, achieving two important goals:
1) decreased the total volumetric wear.
2) maintaining the system’s modular flexibility.
A proven entity improved1
Providing the benefits of a two-piece tibial construct that approaches the performance of a one-piece design is a DePuy advantage. We uniquely address the three major factors that cause wear in a fixed-bearing knee design. By optimizing the tray, the locking mechanism, and the polyethylene, we deliver a construct you desire for your patients.
FEATURES & BENEFITS:
FEATURES & BENEFITS:
- Moderately cross-linked to 5 Mrads to ensure mechanical performance
- Helps eliminate free radicals, material is oxidatively stable
- Mechanical properties similar to standard gamma barrier polyethylene
1 Bearing surface selection in total knee arthroplasty; Michael D, Ries, MD ( AAOS 2008 Symposia
Arthroplasty Knee ); 75th Annual Meeting Proceedings (page 117)