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USTAR II Knee System recallZ-2884-2026 · United Orthopedic Corp. · initiated May 20, 2026

Open, Classified

Is my device affected?

  1. Compare the model, catalog and lot or serial numbers on your device or its packaging with the code information below. A recall usually covers only specific models or lots.
  2. If yours is listed, follow the instructions from United Orthopedic Corp. or your healthcare provider. The company's action is summarized under what the company is doing.
  3. Do not stop using a prescribed or implanted device on your own — talk to your healthcare provider first.

Where to find your model and lot numbers · What recall classes and statuses mean

Why it was recalled

Due to an incomplete process of the component screw by a subcontractor which prevents the properly assembling of stem trail.

FDA root cause category: Process design

What the company is doing

On 03/11/2026, the firm emailed an "URGENT: MEDICAL DEVICE RECALL" Letter to customers informing them that due the fact that the PSA Box Trial cannot be properly assembled with the Hinge Trial in the affected devices because of incomplete processing of the screw components, which may result in interference during assembly with the corresponding device. On 05/20/2026, the firm emailed an updated "URGENT: MEDCIAL DEVICE RECALL" Letter Customers are instructed: 1. Examine your inventory immediately to locate the affected product whose quantities and lot numbers are listed above. Please note the product may have already been returned. 2. Cease all use of these devices immediately and quarantine all affected devices in your territory for immediate return. 3. Customer Service will be contacting you regarding replacements. If you still have the product, you are requested to immediately return the affected product using the prepaid airbills on RMA XXXX . a. Write the RMA number on the outside of the box clearly and legibly. b. Ship recalled product via Fed Ex standard overnight to: UOC USA INC. Attention: RMA# XXXX 16601 Hale Ave. Irvine, CA 92606 (Attached Shipping Label) 4. Additionally, if your firm has further distributed the recall product, please provide that customer with a copy of this recall notification and assist them with the return of the product. 5. Complete and return the following page according to the instructions. For Question - contact UOC Sr. Director of Sales Operations at 949.328.3366.

Recall details

Recall number
Z-2884-2026
Status
Open, Classified
Initiated by the company
May 20, 2026
Posted by the FDA
Aug 5, 2026
Recalling firm
United Orthopedic Corp.
Quantity
2
Product code
KRO
FDA submissions
K190100
Distribution
US Nationwide distribution in the states of Texas and Michigan.

Product description

Brand Name: USTAR II Knee System Product Name: Hinge Box Trial, L, #1-6 and Hinge Box Trial, R, #1-6 Model/Catalog Number: 9325-5711 thru 9325-5716 and 9325-5721 thru 9325-5726 Software Version: N/A Product Description: Knee femur prosthesis trial, reusable Component: No, N/A

Code information (models, lots, serial numbers)

Show the full code information (1k characters)

Product Number; UDI-DI Code; Lot Code: Product number 9325-5711; UDI-DI 04719886907032; Lot number 25FB41 Product number 9325-5712; UDI-DI 04719886907049; Lot number 25FB42 Product number 9325-5713; UDI-DI 04719886907056; Lot number 25FB43 Product number 9325-5714; UDI-DI 04719886907063; Lot number 25FB44 Product number 9325-5715; UDI-DI 04719886907070; Lot number 25FB45 Product number 9325-5716; UDI-DI 04719886907087; Lot number 25FB46 Product number 9325-5721; UDI-DI 04719886907094; Lot number 25FB35 Product number 9325-5722; UDI-DI 04719886907100; Lot number 25FB36 Product number 9325-5723; UDI-DI 04719886907117; Lot number 25FB37 Product number 9325-5724; UDI-DI 04719886907124; Lot number 25FB38 Product number 9325-5725; UDI-DI 04719886907131; Lot number 25FB39 Product number 9325-5726; UDI-DI 04719886907148; Lot number 25FB40

Devices named in this recall

12 devices in the FDA device registry whose identifier appears in the recall's code information.

Product lines

Other devices under the same FDA submission

31 devices cleared under K190100 are not named by identifier in this recall. One submission often covers many models, so they may or may not be affected.

Other products in the same recall event

The FDA groups related products into one recall event (event 99026).

Sources and updates

How recalls are matched to devices · Editorial policy · Report an error on this page