Cleared Special

K251906 - Z1 Hip System (FDA 510(k) Clearance)

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

K251906 · Zimmer, Inc. · Orthopedic device
Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Jul 2025
Decision
28d
Days
Class 2
Risk

K251906 is an FDA 510(k) clearance for the Z1 Hip System. Classified as Prosthesis, Hip, Semi-constrained, Metal/ceramic/polymer, Cemented Or Non-porous, Uncemented (product code LZO), Class II - Special Controls.

Submitted by Zimmer, Inc. (Warsaw, US). The FDA issued a Cleared decision on July 18, 2025 after a review of 28 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 Zimmer, Inc. devices

Submission Details

510(k) Number K251906 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received June 20, 2025
Decision Date July 18, 2025
Days to Decision 28 days
Submission Type Special
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
94d faster than avg
Panel avg: 122d · This submission: 28d
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 K251906.
Avenir® Müller Stem
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