Cleared Traditional

Mpact Constrained Liner (K241461) - FDA 510(k) Clearance

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

K241461 · Medacta International S.A. · Orthopedic device
Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Jul 2025
Decision
434d
Days
Class 2
Risk

K241461 is an FDA 510(k) clearance for the Mpact Constrained Liner. Classified as Prosthesis, Hip, Constrained, Cemented Or Uncemented, Metal/polymer (product code KWZ), Class II - Special Controls.

Submitted by Medacta International S.A. (Castel San Pietro, CH). The FDA issued a Cleared decision on July 31, 2025 after a review of 434 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3310 - 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: High-complexity regulatory submission. Elevated predicate reliance profile. The extended review timeline suggests the FDA required additional documentation before confirming substantial equivalence - a pattern common in complex or first-of-kind Orthopedic submissions.

View all Medacta International S.A. devices

Submission Details

510(k) Number K241461 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received May 23, 2024
Decision Date July 31, 2025
Days to Decision 434 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
312d slower than avg
Panel avg: 122d · This submission: 434d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code KWZ Prosthesis, Hip, Constrained, Cemented Or Uncemented, Metal/polymer
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 888.3310
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 - KWZ Prosthesis, Hip, Constrained, Cemented Or Uncemented, Metal/polymer

All 33
Devices cleared under the same product code (KWZ) and FDA review panel - the closest regulatory comparables to K241461.
PINNACLETM Constrained Acetabular Liners
K240639 · Depuy Ireland UC · Apr 2024
Smith & Nephew, Inc. R3™ Constrained Liner
K162641 · Smith & Nephew, Inc. · Jun 2017
EXPRT™ Revision Hip System - EXPRT™ Hip Distal Stem, EXPRT™ Hip Standard Offset Proximal Body Implant, EXPRT™ Hip Lateral Offset Proximal Body Implant, EXPRT™ Hip Capture Bolt
K163497 · Encore Medical, L.P. · Mar 2017
SMITH & NEPHEW R3 CONSTRAINED LINERS
K122139 · Smith & Nephew, Inc. · Oct 2012
SMITH & NEPHEW RJ CONSTRAINED LINERS
K111635 · Smith & Nephew, Inc. · Sep 2011
LONGEVITY IT HIGHLY CROSSLINKED POLYETHYLENE CONSTRAINED LINERS
K101730 · Zimmer, Inc. · Dec 2010