Cleared Traditional

WALKER HIP PROSTHESIS (K915222) - FDA 510(k) Clearance

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

K915222 · Zimmer, Inc. · Orthopedic device
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Jun 1993
Decision
580d
Days
Class 2
Risk

K915222 is an FDA 510(k) clearance for the WALKER HIP PROSTHESIS. 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 June 22, 1993 after a review of 580 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3353 - 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: High-complexity regulatory submission. Elevated predicate reliance profile. The extended review timeline suggests the FDA required additional documentation before confirming substantial equivalence - a pattern common in complex or first-of-kind Orthopedic submissions.

View all Zimmer, Inc. devices

Submission Details

510(k) Number K915222 FDA.gov
FDA Decision Cleared Substantially Equivalent - NSE Converted (SN)
Date Received November 20, 1991
Decision Date June 22, 1993
Days to Decision 580 days
Submission Type Traditional
Review Panel Orthopedic (OR)
Summary -
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
458d slower than avg
Panel avg: 122d · This submission: 580d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

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 290
Devices cleared under the same product code (LZO) and FDA review panel - the closest regulatory comparables to K915222.
MALLORY-HEAD TOTAL HIP SYSTEM
K921181 · Biomet, Inc. · Feb 1994
BIMETRIC TOTAL HIP SYSTEM
K921224 · Biomet, Inc. · Feb 1994
INTEGRAL TOTAL HIP SYSTEM
K921225 · Biomet, Inc. · Feb 1994
OMNIFIT ZIRCONIA C-TAPER FEMORAL BEARING HEAD
K925695 · Osteonics Corp. · Apr 1993
ZIRCONIA CERAMIC MODULAR HEAD 9TYPE II TAPER
K915641 · Biomet, Inc. · Nov 1992
OSTEONICS ZIRCONIA C-TAPER FEMORAL BEARING HEAD
K915396 · Osteonics Corp. · Oct 1992