Cleared Special

K183365 - Libertas Acetabular Hooded Liner (FDA 510(k) Clearance)

Class II Orthopedic device cleared through the Special 510(k) pathway - typically does not require clinical trials.

K183365 · Maxx Orthopedics, Inc. · Orthopedic device
Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Feb 2019
Decision
80d
Days
Class 2
Risk

K183365 is an FDA 510(k) clearance for the Libertas Acetabular Hooded Liner. Classified as Prosthesis, Hip, Semi-constrained, Metal/ceramic/polymer, Cemented Or Non-porous, Uncemented (product code LZO), Class II - Special Controls.

Submitted by Maxx Orthopedics, Inc. (Norristown, US). The FDA issued a Cleared decision on February 22, 2019 after a review of 80 days - a notably fast clearance cycle.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3353 - the FDA orthopedic device regulatory framework. As a Special 510(k), this submission covers a manufacturer modification to an existing cleared device rather than a new device introduction.

Device pattern: Iterative device modification. Low regulatory complexity profile. This Special 510(k) clearance confirms that the manufacturer's modifications remained within the established regulatory envelope of the original cleared device.

View all Maxx Orthopedics, Inc. devices

Submission Details

510(k) Number K183365 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received December 04, 2018
Decision Date February 22, 2019
Days to Decision 80 days
Submission Type Special
Review Panel Orthopedic (OR)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
42d faster than avg
Panel avg: 122d · This submission: 80d
Pathway characteristics
Modification to existing cleared device.

Device Classification

Product Code LZO Prosthesis, Hip, Semi-constrained, Metal/ceramic/polymer, Cemented Or Non-porous, Uncemented
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 888.3353
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 - LZO Prosthesis, Hip, Semi-constrained, Metal/ceramic/polymer, Cemented Or Non-porous, Uncemented

All 528
Devices cleared under the same product code (LZO) and FDA review panel - the closest regulatory comparables to K183365.
Avenir® Müller Stem
K260182 · Zimmer, Inc. · Apr 2026
implaFit® short stems
K252401 · Implantcast GmbH · Mar 2026
Libertas Taper Short (TS) Uncemented Femoral Stem (Libertas TS Stem)
K253171 · Maxx Orthopedics, Inc. · Jan 2026
Coated hip implants
K250450 · Medacta International S.A. · Sep 2025
Longboard Revision Hip Stem
K243021 · Signature Orthopaedics Pty, Ltd. · Aug 2025
Z1 Hip System
K251906 · Zimmer, Inc. · Jul 2025