Triathlon® Total Knee System - Triathlon® X3® Medial Stabilized Tibial Bearing Insert

FDA 510(k) K253637 · Howmedica Osteonics Corp., Dba Stryker Orthopaedics

Substantially Equivalent

510(k) numberK253637

Submission

Device name
Triathlon® Total Knee System - Triathlon® X3® Medial Stabilized Tibial Bearing Insert
Applicant
Howmedica Osteonics Corp., Dba Stryker Orthopaedics
Mahwah, NJ, US
Received
November 19, 2025
Decision date
February 18, 2026
Decision
Substantially Equivalent (SESE)
Type
Traditional 510(k)
Summary
510(k) summary available from FDA

Official FDA 510(k) record

Device classification

Product code
MBH – Prosthesis, Knee, Patello/Femorotibial, Semi-Constrained, Uncemented, Porous, Coated, Polymer/Metal/Polymer
Device class
Class II (moderate risk)
Regulation
21 CFR 888.3565
Specialty
Orthopedic
Implant
Yes

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K261462LANDMARK Total Knee SystemMBH · Traditional Smith & Nephew, Inc.09/08/2026SE
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K251840Zimmer® Persona® Personalized Knee SystemMBH · Traditional Zimmer, Inc.05/28/2026SE
K253189Persona the Personalized Knee System (Persona Porous Plasma Spray PPS Femurs)MBH · Traditional Zimmer, Inc.03/09/2026SE
K253328GMK 3D Metal Tibial Tray ExtensionMBH · Traditional Medacta International S.A.02/26/2026SE
K253239Active-V Total Knee System; World Total Knee SystemMBH · Traditional Signature Orthopaedics Pty, Ltd.12/23/2025SE
K253161Balanced Knee System TriMax Porous Femoral ComponentsMBH · Traditional Ortho Development Corp.12/19/2025SE
K252777Freedom Metaphyseal Cone Implants (Metaphyseal Cones)MBH · Traditional Maxx Orthopedics, Inc.10/31/2025SE
K252044Triathlon® Total Knee System - Triathlon® Gold Femoral ComponentsMBH · Traditional Howmedica Osteonics Corp., Dba Stryker…10/24/2025SE
K243656U2 Total Knee System – PF+ Patella; USTAR II System– PF+ PatellaMBH · Traditional United Orthopedic Corporation07/31/2025SE

More from United Orthopedic Corporation

510(k)DeviceDecision
K261898Triathlon® Knee System; Triathlon® Hinge Knee System; Scorpio® Total Knee SystemKRO · Traditional 08/06/2026SE
K261624Omnifit® 20° Series I Insert;Omnifit® Crossfire® 10° Series II Insert; Constrained…LPH · Traditional 07/10/2026SE
K252898Triathlon® Tritanium® Asymmetric Patella; Triathlon® Tritanium® Symmetric Patella…KRO · Traditional 12/15/2025SE
K252044Triathlon® Total Knee System - Triathlon® Gold Femoral ComponentsMBH · Traditional 10/24/2025SE
K251665Triathlon® Hinge Knee SystemKRO · Traditional 07/25/2025SE
K250989Stryker and Serf hip devicesLPH · Traditional 07/25/2025SE
K243817Scorpio Universal Dome Patella; Scorpio Total Stabilizer Insert; Scorpio-Flex Posterior…JWH · Traditional 02/06/2025SE
K243784Stryker Orthopaedics Hip Devices Labeling UpdateLPH · Traditional 02/06/2025SE
K242831Triathlon Knee System; Triathlon Pro Posterior Stabilized Femoral Components; Triathlon…JWH · Traditional 12/04/2024SE
K241716Global Modular Replacement System, Modular Replacement System, Modular Rotating Hinge…JDI · Traditional 08/02/2024SE

Questions and answers

When was Triathlon® Total Knee System - Triathlon® X3® Medial Stabilized Tibial Bearing Insert cleared by the FDA?

Triathlon® Total Knee System - Triathlon® X3® Medial Stabilized Tibial Bearing Insert (K253637) received a 510(k) decision of Substantially Equivalent on February 18, 2026, 91 days after the submission was received.

What is the product code of K253637?

The FDA product code is MBH – Prosthesis, Knee, Patello/Femorotibial, Semi-Constrained, Uncemented, Porous, Coated, Polymer/Metal/Polymer, a Class II (moderate risk) device regulated under 21 CFR 888.3565.