Cleared Traditional

UKNEE TOTAL KNEE SYSTEM (K021657) - FDA 510(k) Clearance

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

K021657 · United Orthopedic Corp. · Orthopedic device
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Aug 2002
Decision
84d
Days
Class 2
Risk

K021657 is an FDA 510(k) clearance for the UKNEE TOTAL KNEE SYSTEM. Classified as Prosthesis, Knee, Patellofemorotibial, Semi-constrained, Cemented, Polymer/metal/polymer (product code JWH), Class II - Special Controls.

Submitted by United Orthopedic Corp. (Hsinchu, TW). The FDA issued a Cleared decision on August 12, 2002 after a review of 84 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. 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 United Orthopedic Corp. devices

Submission Details

510(k) Number K021657 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received May 20, 2002
Decision Date August 12, 2002
Days to Decision 84 days
Submission Type Traditional
Review Panel Orthopedic (OR)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
38d faster than avg
Panel avg: 122d · This submission: 84d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

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 517
Devices cleared under the same product code (JWH) and FDA review panel - the closest regulatory comparables to K021657.
OPTETRAK TOTAL KNEE SYSTEM OFFSET TIBIAL TRAY
K023186 · Exactech, Inc. · Oct 2002
NEXGEN COMPLETE KNEE SOLUTION CRUCIATE RETAINING (CR)-FLEX FEMORAL COMPONENTS
K023211 · Zimmer, Inc. · Oct 2002
TOTAL KNEE FEMORAL COMPONENT
K022010 · Smith & Nephew, Inc. · Aug 2002
SEARCH EVOLUTION TOTAL KNEE SYSTEM
K021313 · Aesculap, Inc. · Jul 2002
SCORPIO INSET PATELLAR COMPONENT
K020830 · Howmedica Osteonics Corp. · Jun 2002
ASCENT ALL-POLY PS TIBIAL BEARINGS
K021559 · Biomet, Inc. · Jun 2002