RBK

Optetrak® RBK®

The Optetrak® RBK® gives you the best of both worlds — the benefits of a fixed and a mobile bearing knee in one unique system.

The fixed, proximal-bearing surface allows for 145 degrees of flexion while maintaining Optetrak’s proven optimized congruency. The lower bearing features a patented “wave” design for rotational freedom and predictable kinematics.

These two articulating surfaces work together to maintain proper alignment and minimize contact stress.

 
 RBK with Alpha Tags
  1. Optetrak’s contoured femoral flange, the smooth shape in the sagittal plane and a deep femoral
    groove reduce strain in the retinacular tissue, allowing for more natural patellar tracking from
    extension to flexion.3,4,5
  2. The Hi-Flex spine and cam mechanism, combined with the tibial insert’s upper geometry, provide controlled rollback for up to 145 degrees of flexion without posterior impingement.
  3. Optetrak’s tibial inserts are net compression molded polyethylene. No machining is performed on the upper bearing surface. In vitro studies have shown that compression molded tibial inserts have less debris and less pitting than machined tibial inserts.1,6
  4. The central polyethylene peg is used only as an anti-luxation device, not as a pivot guide for the axial rotation. This allows the peg size to be reduced to provide for easier implantation and a bonepreserving, primary fin preparation.
  5. The wave geometry provides a predictable contact surface between the components,
    especially during the eccentric loading position.
  6. Spherical, all-polyethylene patellar component allows for interchangeability and high congruence throughout range of motion. Available in either three-peg or single-peg fixation options.

 

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Optetrak® is a registered trademark of Exactech, Inc.

 

 


 

 

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