Cleared Special

K133152 - JTS EXTENDIBLE DISTAL FEMORAL IMPLANT (FDA 510(k) Clearance)

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

K133152 · Stanmore Implants Worldwide , Ltd. · Orthopedic device
Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Jan 2014
Decision
61d
Days
Class 2
Risk

K133152 is an FDA 510(k) clearance for the JTS EXTENDIBLE DISTAL FEMORAL IMPLANT. Classified as Prosthesis, Knee, Femorotibial, Constrained, Cemented, Metal/polymer (product code KRO), Class II - Special Controls.

Submitted by Stanmore Implants Worldwide , Ltd. (Washington, US). The FDA issued a Cleared decision on January 22, 2014 after a review of 61 days - a notably fast clearance cycle.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3510 - 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 Stanmore Implants Worldwide , Ltd. devices

Submission Details

510(k) Number K133152 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received November 22, 2013
Decision Date January 22, 2014
Days to Decision 61 days
Submission Type Special
Review Panel Orthopedic (OR)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
61d faster than avg
Panel avg: 122d · This submission: 61d
Pathway characteristics
Modification to existing cleared device.

Device Classification

Product Code KRO Prosthesis, Knee, Femorotibial, Constrained, Cemented, Metal/polymer
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 888.3510
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 - KRO Prosthesis, Knee, Femorotibial, Constrained, Cemented, Metal/polymer

All 85
Devices cleared under the same product code (KRO) and FDA review panel - the closest regulatory comparables to K133152.
Triathlon® Tritanium® Asymmetric Patella
K252898 · Howmedica Osteonics Corp., Dba Stryker Orthopaedics · Dec 2025
Stem Extension Line (USTAR II System)
K252303 · United Orthopedic Corporation · Aug 2025
Triathlon® Hinge Knee System
K251665 · Howmedica Osteonics Corp., Dba Stryker Orthopaedics · Jul 2025
ATTUNE™ Revision Hinge Knee
K242871 · Depuy Ireland UC · Nov 2024
EVOLUTION® Hinge Knee System
K240043 · Microport Orthopedics, Inc. · Apr 2024
ATTUNE Total Knee System, ATTUNE Cementless Knee System, LPS Limb Preservation System, Sigma High Performance (HP) Partial Knee System
K233980 · Depuy Ireland UC · Mar 2024