Cleared Traditional

K252898 - Triathlon® Tritanium® Asymmetric Patella (FDA 510(k) Clearance)

Also includes:
Triathlon® Tritanium® Symmetric Patella Triathlon® Symmetric Patella Triathlon® Asymmetric Patella Scorpio® Universal Dome Patella Triathlon® Hinge Bumper

Class II Orthopedic device cleared through predicate-based substantial equivalence - typically does not require clinical trials.

K252898 · Howmedica Osteonics Corp., Dba Stryker Orthopaedics · Orthopedic device
Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Dec 2025
Decision
95d
Days
Class 2
Risk

K252898 is an FDA 510(k) clearance for the Triathlon® Tritanium® Asymmetric Patella. Classified as Prosthesis, Knee, Femorotibial, Constrained, Cemented, Metal/polymer (product code KRO), Class II - Special Controls.

Submitted by Howmedica Osteonics Corp., Dba Stryker Orthopaedics (Mahwah, US). The FDA issued a Cleared decision on December 15, 2025 after a review of 95 days - within the typical 510(k) review window.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3510 - the FDA orthopedic device regulatory framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: Standard predicate-based submission. Standard predicate reliance. This clearance follows a standard predicate-based equivalence path within the Orthopedic review framework, consistent with the majority of Class II 510(k) submissions.

View all Howmedica Osteonics Corp., Dba Stryker Orthopaedics devices

Submission Details

510(k) Number K252898 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received September 11, 2025
Decision Date December 15, 2025
Days to Decision 95 days
Submission Type Traditional
Review Panel Orthopedic (OR)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
27d faster than avg
Panel avg: 122d · This submission: 95d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code KRO Prosthesis, Knee, Femorotibial, Constrained, Cemented, Metal/polymer
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 888.3510
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Orthopedic devices follow this clearance model.

Regulatory Peers - KRO Prosthesis, Knee, Femorotibial, Constrained, Cemented, Metal/polymer

All 85
Devices cleared under the same product code (KRO) and FDA review panel - the closest regulatory comparables to K252898.
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K230563 · Microport Orthopedics, Inc. · Sep 2023