MAUDE Adverse Event Report: BIOMET UK LTD. OXFORD ANAT BRG RT X-SM 5MM PMA; PROSTHESIS, KNEE, FEMOROTIBIAL, UNICOMPARTMENTAL

Catalog Number	160792
Medical Device Problem Code	Device Dislodged or Dislocated (2923)
Health Effect - Clinical Codes	Pain (1994); Joint Dislocation (2374)
Date of Event	06/12/2025
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that the patient underwent revision surgery three months post implantation due to pain and bearing dislocated anteriorly.All implants were revised.No additional information is available.
Additional Manufacturer Narrative
(b)(4).D10 ¿ 154719, oxf uni tib tray sza rm, lot j7792994 154912, oxf ph3 cementless fem sz xsm, lot 7237890 g2 ¿ foreign ¿ japan the device will not be returned for analysis; however, an investigation of the reported event is in progress.Once the investigation is completed, a supplemental medwatch 3500a will be submitted.
Additional Manufacturer Narrative
This follow-up report is being submitted to relay additional information.The following sections were updated: b4, b5, g3, g6, h2, h3, h6, h10, h11.No product was returned or pictures provided; a product evaluation could not be performed.A review of the device manufacturing records confirmed no abnormalities or deviations that could be related to the reported event.The reported event was confirmed by review of x-rays.Radiographs were provided and reviewed.The review identified postoperative short ap x-ray shows slight varus alignment of the tibial component and grossly neutral femorotibial knee joint alignment rather than standard normal valgus alignment of the knee.On later imaging, the bearing is anteriorly dislocated.It is uncertain if the mild relative varus alignment of the knee could have led to bearing wear predisposing to bearing dislocation.The device history record was reviewed and no discrepancies relevant to the reported event were found.Review of the complaint histories identified additional similar complaints for the reported items and no additional similar complaints for the reported part and lot combinations.A definitive root cause cannot be determined.If any further information is found which would change or alter any conclusions or information, a supplemental report will be filed accordingly.Zimmer biomet will continue to monitor for trends.
Event or Problem Description
No further event information available at the time of this report.

• Brand Name: OXFORD ANAT BRG RT X-SM 5MM PMA
• Common Device Name: PROSTHESIS, KNEE, FEMOROTIBIAL, UNICOMPARTMENTAL
• Manufacturer (Section D): BIOMET UK LTD.; waterton industrial estates; bridgend
• Manufacturer (Section G): BIOMET UK LTD.; waterton industrial estates; bridgend
• Manufacturer Contact: jennifer rapsavage ; 56 e. bell dr.; warsaw, IN 46582 ; 5745260384
• MDR Report Key: 22218789
• Report Number: 3002806535-2025-00237
• Device Sequence Number: 18307628
• Product Code: NRA
• UDI-Device Identifier: 05019279073030
• UDI-Public: (01)05019279073030(17)250429(10)6786762
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: P010014
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Device Explanted Year: 2025
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,Company Representative,Distributor
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 10/29/2025

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Operator of Device: Lay User/Patient
• Device Expiration Date: 04/29/2025
• Device Catalogue Number: 160792
• Device Lot Number: 6786762
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 06/09/2025
• Supplement Date Received by Manufacturer: 10/28/2025
• Initial Report FDA Received Date: 06/17/2025
• Supplement Report FDA Received Date: 10/29/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 04/29/2020
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Hospitalization; Required Intervention
• Patient Age: 78 YR
• Patient Sex: Female
• Patient Weight: 44 KG