Cleared Traditional

K251618 - MOTO Partial Knee System Extension (FDA 510(k) Clearance)

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

K251618 · Medacta International S.A. · Orthopedic device
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Jul 2025
Decision
58d
Days
Class 2
Risk

K251618 is an FDA 510(k) clearance for the MOTO Partial Knee System Extension. Classified as Prosthesis, Knee, Femorotibial, Non-constrained, Cemented, Metal/polymer (product code HSX), Class II - Special Controls.

Submitted by Medacta International S.A. (Castel San Pietro, CH). The FDA issued a Cleared decision on July 24, 2025 after a review of 58 days - a notably fast clearance cycle.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3520 - 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: Fast-track predicate clearance. Standard predicate reliance. The short review cycle indicates strong predicate alignment - the FDA found sufficient equivalence without extended technical review.

View all Medacta International S.A. devices

Submission Details

510(k) Number K251618 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received May 27, 2025
Decision Date July 24, 2025
Days to Decision 58 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
64d faster than avg
Panel avg: 122d · This submission: 58d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code HSX Prosthesis, Knee, Femorotibial, Non-constrained, Cemented, Metal/polymer
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 888.3520
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 Consultant

Medacta USA
Christopher Lussier

The regulatory consultant manages the 510(k) submission process on behalf of the applicant - coordinating technical documentation, predicate strategy and FDA communications. Identifying the consultant behind a submission is a key signal for competitive regulatory intelligence.

Regulatory Peers - HSX Prosthesis, Knee, Femorotibial, Non-constrained, Cemented, Metal/polymer

All 113
Devices cleared under the same product code (HSX) and FDA review panel - the closest regulatory comparables to K251618.
Tahoe Unicondylar Knee System with TiNbN Overcoat
K260796 · Shalby Advanced Technologies, Inc. Dba Consensus Orthopedics · Apr 2026
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Arthrex iBalance Partial Knee System
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K241260 · Globus Medical, Inc. · Dec 2024
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K242711 · Smith & Nephew, Inc. · Oct 2024