Zimmer® NexGen® Trabecular Metal™ Tibial Tray

The Trabecular Metal Tibial Tray unites stable fixation with modular components to meet a growing demand for knees implanted through mini-arthrotomies.  With physical and mechanical properties designed to be similar to bone, Trabecular Metal Material achieves stable initial fixation and helps prevent stress shielding and lift-off.  The separate articulating surface is available in Prolong® Highly Crosslinked Polyethylene, which substantially improves resistance to delamination and increases wear resistance.1*  And the modular components work with Zimmer® Minimally Invasive Solutions ™ procedures.

Adaptable Modular Design

  • Provides a choice of fully compatible NexGen CR or LPS-Flex fixed-bearing articular surface in sizes ranging from 10mm to 17mm. 
  • Allows replacement of just the articular surface. 
  • A broad range of sizes allows better coverage of the proximal tibia by the tibial tray. 

Minimally Invasive Solutions Procedures

  • Low profile tray works with your incision. 
  • Instrumentation facilitates accurate, repeatable bone cuts.

Trabecular Metal Technology and Prolong Polyethylene Used Together for the First Time

  • Trabecular Metal Technology and Prolong Polyethylene provide the ultimate combination for your high demand patients.
  • In lab testing Prolong Polyethylene has been shown to be delamination-resistant after multiple aggressive wear tests.2*

Trabecular Metal Material Coverage and Cementless Fixation

  • Designed to support tissue ingrowth and ongrowth which helps prevent stress shielding and lift-off.3,4 
  • Helps establish initial stability with press-fit pegs at a higher coefficient of friction on bone than other implant materials (for non-machined surfaces).5

Designed to Engage Best Bone 

  • Hexagonal pegs positioned to engage the area of highest tibial bone density, in line with condylar loading.1
  • Interference fit for high initial fixation

*InVitro wear/delamination tests have not been shown to correlate with clinical wear mechanisms.

References 

  1. Data on file at Zimmer Inc.
  2. Yao JQ, Blanchard CR, Lu X, et al.  Improved resistance to wear, delamination and posterior loading fatigue damage of electron beam irradiated, melt-annealed, highly crosslinked UHMWPE knee inserts.  Standard Technical Publication 1445, ASTM International. 2004.
  3. Bobyn JD, Stackpool G, Toh K-K, et al.  Bone ingrowth characteristics and interface mechanics of a new porous tantalum biomaterial. J Bone Joint Surg. 1999;81-B:907-914.
  4. Bobyn JD, Hacking SA, Chan SP, et.al. Characterization of a new porous tantalum biomaterial for reconstructive orthopaedics.  Scientific Exhibit: 66th Annual Meeting of the AAOS: 1999; Anaheim, CA.
  5. Zhang Y, Ahn PB, FitzpatrickDC, et al.  Interfacial frictional behavior. Cancellous bone, cortical bone, and a novel porous tantalum biomaterial. J Musculoskeletal Res. 1999;3(4):245-251.