MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRIATHLON PS X3 TIBIAL INSERT; PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO

Catalog Number	5532-G-409-E
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Code	Unspecified Infection (1930)
Date of Event	08/18/2025
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that the patient's right knee was revised due to infection.All implants were removed and a spacer was placed.Rep confirmed that no further information will be released by the hospital or surgeon.
Additional Manufacturer Narrative
The following devices were also listed in this report: triathlon ps fem component cemented; cat # 5515-f-402; lot # ssv4ss4a, triathlon prim tib bplate cemented sz 4; cat # 5520-b-400; lot # udrlb.It cannot be determined which, if any of these devices may have caused or contributed to the patient's experience.Reported event: an event regarding infection involving a triathlon insert was reported.The event was not confirmed.Method & results: -product evaluation and results: the device was not returned for inspection; however, photographs were provided for review.The photos show a recently explanted insert, covered in blood.No determination can be made based on these photographs.-clinician review: no medical records were received for review with a clinical consultant.-product history review: review of the device history records indicate devices were manufactured and accepted into final stock with no relevant reported discrepancies.-complaint history review: there have been no other similar events for the lot or sterile lot referenced.Conclusions: it was reported that the patient was revised due to infection.The device was not returned for inspection; however, photographs were provided for review.The photos show a recently explanted insert, covered in blood.No determination can be made based on these photographs.All stryker products sold as sterile are validated to a minimum sterility assurance level sal of 10^-6 in accordance with applicable iso standards.The exact cause of the event could not be determined because insufficient information was provided.Further information such as pathology reports, pre- and post-operative x-rays and the revision operative report as well as patient history and follow-up notes are needed to complete the investigation for determining root cause.No further investigation for this event is possible at this time.If devices and/or additional information become available to indicate further evaluation is warranted, this record will be reopened.

• Brand Name: TRIATHLON PS X3 TIBIAL INSERT
• Common Device Name: PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO
• Manufacturer (Section D): STRYKER ORTHOPAEDICS-MAHWAH; 325 corporate drive; mahwah NJ 07430
• Manufacturer (Section G): STRYKER ORTHOPAEDICS-MAHWAH; 325 corporate drive; mahwah NJ 07430
• Manufacturer Contact: marisol santiago ; 325 corporate drive; mahwah, NJ 07430 ; 2018315000
• MDR Report Key: 23001792
• Report Number: 0002249697-2025-00964
• Device Sequence Number: 21104589
• Product Code: MBH
• UDI-Device Identifier: 07613327338355
• UDI-Public: 07613327338355
• Combination Product (Y/N): N
• Initial Reporter State: RI
• Initial Reporter Country: US
• PMA/510(K) Number: K172634
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2024
• Device Explanted Year: 2025
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 09/09/2025

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?: No
• Operator of Device: Health Professional
• Device Expiration Date: 08/31/2026
• Device Catalogue Number: 5532-G-409-E
• Device Lot Number: N48LL9
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 08/18/2025
• Initial Report FDA Received Date: 09/09/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 09/01/2021
• 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: Required Intervention; Hospitalization
• Patient Age: 61 YR
• Patient Sex: Unknown
• Patient Weight: 81 KG