Zimmer Inc.: Natural-Knee II Durasul All-Poly Patella, Size 3, 7mm The Zimmer Natural-Knee II Durasul Patella product is a semi-constrained total knee prosthesis consisting of four anatomically designed components: the femoral, tibial, articular surface, and patellar prosthesis. The all-polyethylene patella is made from Durasul Highly Crosslinked Ultra High Molecular Weight Polyethylene. The N-K II Durasul polyethylene patella components are indicated for patient conditions of non-inflammatory degenerative joint disease (NIDJD), e.g., avascular necrosis, osteoarthritis, and inflammatory degenerative joint disease (IJD), e.g., rheumatoid arthritis; correctable valgus-varus deformity and moderate flexion contracture; those patients with failed previous surgery where pain, deformity, or dysfunction persists; and revision of previously failed knee arthroplasty.

Recall number

Z-0851-2012

Recalling firm

Zimmer Inc.

Product

Natural-Knee II Durasul All-Poly Patella, Size 3, 7mm The Zimmer Natural-Knee II Durasul Patella product is a semi-constrained total knee prosthesis consisting of four anatomically designed components: the femoral, tibial, articular surface, and patellar prosthesis. The all-polyethylene patella is made from Durasul Highly Crosslinked Ultra High Molecular Weight Polyethylene. The N-K II Durasul polyethylene patella components are indicated for patient conditions of non-inflammatory degenerative joint disease (NIDJD), e.g., avascular necrosis, osteoarthritis, and inflammatory degenerative joint disease (IJD), e.g., rheumatoid arthritis; correctable valgus-varus deformity and moderate flexion contracture; those patients with failed previous surgery where pain, deformity, or dysfunction persists; and revision of previously failed knee arthroplasty.

Status

Terminated

Initiated

2011-12-21

Posted

2012-01-25

Terminated

2015-08-21

Reason

The firm has 16 reports of patella peg shear out of 109,386 distributed units (0.0137%). The failures have been reported where the pegs on the back side of the patella have sheared at the peg/patella interface. Analysis shows that the highly cross-linked polyethylene, Durasul, patella was shown to have a lower fracture fatigue strength than the Sulene counterpart and that the cement technique used

Root cause

Component design/selection

Action

Zimmer sent an Urgent Device Recall letter dated December 20, 2011, to all affected customers. The letter identified the product, the problem, and the action to be taken by the customer. Customers were instructed to stop distribution of the affected product and return all lots in inventory. Customers should provide a list of all hospitals and surgeons that have used the affected product by completing the User Facility and Health Care Professional Form and fax a copy to (574) 372-4265. If customers distributed the product further they should provide a copy of the recall letter to those customers. For questions regarding this recall call 1-877-946-2761.

Quantity

not on file

Distribution

Worldwide Distribution - USA (nationwide) and the countries of Belgium, Germany, France, Austria, Sweden, Switzerland, South Africa, and the UK

Lot, serial or model codes

6301-07-103; all lots

510(k) numbers

["K002335"]

PMA numbers

not on file

Product code

JWH

Firm FEI

1000220733

Firm city

Warsaw

Firm state

IN

Firm country

not on file

Cite as

FDA Medical Device Recalls (openFDA) (U.S. Food and Drug Administration (openFDA)), device-recall-0001-of-0001.json.zip, sha256 b87518bfe2e8, published 2026-09-28

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