Cleared Special

NEXFLEX TOTAL HIP SYSTEM (K042252) - FDA 510(k) Clearance

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

K042252 · Alphatec/Nexmed · Orthopedic device
Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Dec 2004
Decision
108d
Days
Class 2
Risk

K042252 is an FDA 510(k) clearance for the NEXFLEX TOTAL HIP SYSTEM. Classified as Prosthesis, Hip, Semi-constrained, Metal/polymer, Porous Uncemented (product code LPH), Class II - Special Controls.

Submitted by Alphatec/Nexmed (Carlsbad, US). The FDA issued a Cleared decision on December 6, 2004 after a review of 108 days - within the typical 510(k) review window.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3358 - 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. Standard predicate reliance. This Special 510(k) clearance confirms that the manufacturer's modifications remained within the established regulatory envelope of the original cleared device.

View all Alphatec/Nexmed devices

Submission Details

510(k) Number K042252 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received August 20, 2004
Decision Date December 06, 2004
Days to Decision 108 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
14d faster than avg
Panel avg: 122d · This submission: 108d
Pathway characteristics
Modification to existing cleared device.

Device Classification

Product Code LPH Prosthesis, Hip, Semi-constrained, Metal/polymer, Porous Uncemented
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 888.3358
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 - LPH Prosthesis, Hip, Semi-constrained, Metal/polymer, Porous Uncemented

All 325
Devices cleared under the same product code (LPH) and FDA review panel - the closest regulatory comparables to K042252.
TRIDENT ACETABULAR SYSTEM
K033716 · Howmedica Osteonics Corp. · Feb 2005
MALLORY-HEAD MODULAR CALCAR STEMS WITH INTERLOCKING SLOTS
K042774 · Biomet, Inc. · Jan 2005
TAPERLOC 12/14 TAPER FEMORAL COMPONENTS
K043537 · Biomet, Inc. · Jan 2005
PERFECTA FEMORAL STEM
K031402 · Wrightmedicaltechnologyinc · Nov 2004
X-SERIES INTEGRAL RPP FEMORAL COMPONENTS
K042029 · Biomet, Inc. · Nov 2004
ZIMMER M/L TAPER HIP PROSTHESIS WITH CALCICOAT CERAMIC COATING
K042337 · Zimmer, Inc. · Nov 2004