Cleared Special

K173875 - GENFlex2 Total Knee System - Ultra-Congruent CR Tibial Insert (FDA 510(k) Clearance)

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

K173875 · Stelkast, Inc. · Orthopedic device
Jan 2018
Decision
29d
Days
Class 2
Risk

K173875 is an FDA 510(k) clearance for the GENFlex2 Total Knee System - Ultra-Congruent CR Tibial Insert. Classified as Prosthesis, Knee, Patellofemorotibial, Semi-constrained, Cemented, Polymer/metal/polymer (product code JWH), Class II - Special Controls.

Submitted by Stelkast, Inc. (Mcmurray, US). The FDA issued a Cleared decision on January 19, 2018 after a review of 29 days - a notably fast clearance cycle.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3560 - 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.

Submission Details

510(k) Number K173875 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received December 21, 2017
Decision Date January 19, 2018
Days to Decision 29 days
Submission Type Special
Review Panel Orthopedic (OR)
Summary Summary PDF
Regulatory Context
Review time vs. panel average
87d faster than avg
Panel avg: 116d · This submission: 29d
Pathway characteristics
Modification to existing cleared device.

Device Classification

Product Code JWH Prosthesis, Knee, Patellofemorotibial, Semi-constrained, Cemented, Polymer/metal/polymer
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 888.3560
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 - JWH Prosthesis, Knee, Patellofemorotibial, Semi-constrained, Cemented, Polymer/metal/polymer

All 72
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