Triathlon TS Cones

Stryker’s Triathlon TS revision knee system features a reamer-based system of tibial and femoral Triathlon Tritanium cone augments, which are designed to provide stability in revision cases where a metaphyseal defect filling is necessary. The reamer-based nature of the system enables reproducible procedural simplicity that helps to maximise bone preservation and allows for metaphyseal fixation without constraining subsequent implant positioning1.

3D Printed Tritanium Technology

3D Printed Tritanium Technology

Tritanium is a highly porous metal biologic fixation technology derived from a commercially-pure titanium powder. Stryker’s 3D printing process utilises a focused laser beam to melt layers of titanium powder, giving Stryker the ability to create unique porous structures, and make it possible to selectively position these porous structures in desired zones.

The Triathlon Tritanium cone augments are manufactured using this technology

  • The combination of solid and porous structures allows for reduced cone augment cross sections while still meeting fatigue strength requirements2. Reduced cross sections permit the use of larger diameter stems and provide ‘implant-to-cone’ alignment freedom.
  • Normalisations on the solid, inner surface of the cone augments create a cement interface which reduces cement shear. The inner surface is also rough, to accommodate cement adhesion3,4
  • Torsional testing showed no disassociation of the cone to the tibial baseplate under clinically relevant loading3
Implant Positioning Alignment

Implant Positioning Alignment

The Triathlon Tritanium cone augments are designed to promote metaphyseal fixation without constraining subsequent implant positioning5,6.

  • Allows for preservation of the desired alignment between the cone augment and the Triathlon TS implant5,6.

The cone augments also allow for specified degrees of rotational freedom7.

  • Tibia +/- 10 degrees
  • Femur +/- 5 degrees
SOMA Designed

SOMA Designed

The Triathlon Tritanium cone augments were created using the SOMA database, Stryker’s unique population-based orthopaedic design environment.

SOMA designed cone augment shapes and sizes are designed to help meet reconstruction challenges and to fit a broad range of patients8.

  • Anatomic sizing of metaphyseal augments is utilised to minimise unnecessary bone removal and reduce intraoperative contouring of bone8.
Extra Resources

Extra Resources

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Triathlon TS including Cone Augments Surgical Technique
  1. Triathlon Revision Knee System Surgical Protocol (TRITS-SP-2 Rev-2)
  2. Stryker Technical Report R&D. F1800 - Cantilever Fatigue Test - Triathlon Tritanium Cone Augments. RD-14-048
  3. Stryker Technical Report R&D. Torque Test- Triathlon Tritanium Cone Augments. RD-14-067
  4. Stryker Technical Report R&D. Cement and Tritanium Shear Bond Strength Test. RD-15-014
  5. Tibial Bone Prep Tolerance Analysis. Doc# A0004385. Project# 195725
  6. Femoral Bone Prep Tolerance Analysis Doc# A0004384. Project# 195725
  7. TRITS-SP-2
  8. Leibowitz E, Lipschutz D, Soliman M, Meneghini M. Virtual Bone Analysis Determines Metaphyseal Augment Fit. ORS 2015 Meeting Poster.
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