Triathlon Tritanium Knee System

Table of Contents Cementless TKA Why Cementless TKA?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Cementless TKA - Clinical History. . . . . . . . . . . . . . . . . . . . . . . . . 4 Published RSA Results Comparing Fixation Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Biologic Fixation Tritanium. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 What is 3D Printing?. . . . . . . . . . . ....

Triathlon® Tritanium®   Knee System Cementless TKA Why Cementless TKA? Cementless TKA is growing in popularity and is a fast-growing trend.1 Recent studies support that cementless TKA achieve excellent results,2-4 including a 2012 study showing 96% survivorship at up to 18 years without aseptic loosening.2 The kinematics of Triathlon coupled with the latest in highly porous biologic fixation technology offers a knee system like no other. For surgeons interested in cementless TKA, Triathlon Tritanium implants now allow surgeons to expand its use in more patients. Read more about Triathlon’s cementless...

Published RSA Results Comparing Fixation Methods Stable primary fixation of the implant is a prerequisite for biologic fixation.8 An RSA study comparing fixation method with the same prosthesis showed no statistical difference between fixation methods in displacement at the prosthetic edge, subsidence, and lift off.8

Triathlon® Tritanium®   Knee System Biologic Fixation Tritanium Tritanium implants are the latest evolutions in the Triathlon cementless knee portfolio. Tritanium is highly porous metal biologic fixation technology. Stryker’s 3D printing technology allows for titanium powder to be applied in numerous layers and provide a complex porous structure in appropriate areas of the implant. The proximal surface area for Tritanium on the tibial baseplate has been extended to part of the pegs and keels to allow the minor inconsistencies of bone resection and morphology to remain in close contact with the...

Peri-Apatite (PA)Technology Peri-Apatite was developed to coat hydroxyapatite onto porous coated fixation surfaces. Triathlon's cementless femoral components are manufactured with this technology. As opposed to plasma-sprayed HA coatings, Peri-Apatite HA coating wraps itself around the circumference of the porous surface, which is designed to increase the HA surface available for fixation.9 The most recent study published on the Triathlon (PA-coated) cementless system showed that all implants demonstrated evidence of stable biologic fixation at a | Triathlon PA Clinical Study Results Excellent...

Triathlon® Tritanium®   Knee System Knee Design Triathlon & The Single Radius Stable primary fixation of the implant is a prerequisite for biologic fixation.8 The less constrained the design, the less potential for stresses generated at the articulating surface to be transferred to the bone-implant interface.10 Triathlon CR and PS systems are designed to minimize dynamic stress transfer to the tibial fixation interface by providing minimal resistance to internal and external motion in hyperextension and throughout flexion, and by locating the bearing sulcus directly over the tibial keel to help...

Given the importance of stable primary fixation,8 underside features of the Tritanium baseplate were designed to reduce micromotion and lift off.23,31 3D printing technology provided Stryker engineers the ability to think of a design, 3D print it, and then test it. Many designs were tested, but none provided greater stability than the Triathlon keel design.23,31 Peak pull out force of 6 different peg designs.31 Bullet Cruciform represents the design chosen for the Triathlon Tritanium baseplate. 100 Initial Stability Biomet Square Bullet Barb -0.8 > Dual Hex Pegs (NexGen Trabecular Metal) Dual...

Triathlon® Tritanium®   Knee System Metal-Backed Patella The Triathlon Tritanium metal-backed patella offers a highly porous biologic fixation surface in a monoblock design. The patellofemoral track and polyethylene material in the Triathlon Tritanium Metal-Backed Patella has been studied clinically in the Triathlon PA metalbacked patella design, and one study using that design demonstrated no patella failures.3 While the bone-facing architecture has been created to encourage biologic fixation, a different interface architecture was designed to enhance the association between the metal backing...

Procedural Procedural Highlights The Triathlon Tritanium baseplate can be implanted with minimal additional preparation compared to a cemented Triathlon implant. The only additional step is to prepare the tibia for the pegs, which are designed to aid in initial stability.31 The four peg prep holes on the Tibial Peg Drill Template correspond to the pegs on the implant. A new Patella Inserter and Patella Captures will help evenly distribute the forces over the entire implant and allow the device to be seated evenly and completely onto the prepared bone surface of the native patella.

References 1. Table 54: Primary TKA Implant Market. US Markets for Large-Joint Reconstructive Implants 2013. Millennium Research Group. March 2013. Pg. 84. 2. Melton J et al. Long-term outcome in an uncemented, hydroxyapatite-coated total knee replacement. JBJS Br. VOL. 94-B, No. 8, August 2012. 1067-1070. 3. Harwin S, Kester M, Malkani A, Manley M. Excellent Fixation Achieved With Cementless Posteriorly Stabilized Total Knee Arthroplasty. The Journal of Arthroplasty Vol. 28 No. 1 2013. 4. CC, Cross MJ. Five- to 12-year follow-up of a hydroxyapatite-coated, cementless total knee Tai replacement...