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-611-E
Medical Device Problem Codes	Degraded (1153); Unstable (1667)
Health Effect - Clinical Code	Joint Laxity (4526)
Date of Event	08/04/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Reported event: an event regarding wear & instability involving a triathlon insert was reported.The event was not confirmed.Method & results: product evaluation and results: material analysis, visual, functional and dimensional inspections could not be performed as the device was not returned.Clinician review: no medical records were received for review with a clinical consultant.Product history review: not performed as lot number is unknown.Complaint history review: not performed as lot number is unknown.Conclusions: the exact cause of the event could not be determined because insufficient information was provided.Further information such as lot details, return of the device, 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.
Event or Problem Description
The patient experienced instability in the knee, and dr.Assumed that the poly had been worn since it was operated on 10+ years ago, so he decided to revise the thickness of the poly.

• 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: juana hiciano ; 325 corporate drive; mahwah, NJ 07430 ; 2018315000
• MDR Report Key: 22892464
• Report Number: 0002249697-2025-00918
• Device Sequence Number: 5986390
• Product Code: MBH
• UDI-Device Identifier: 07613327338126
• UDI-Public: 07613327338126
• Combination Product (Y/N): N
• Initial Reporter State: OR
• Initial Reporter Country: US
• PMA/510(K) Number: K172634
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2015
• Device Explanted Year: 2025
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 08/26/2025

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 Catalogue Number: 5532-G-611-E
• Device Lot Number: UNKNOWN
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 08/04/2025
• Initial Report FDA Received Date: 08/26/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• 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 Sex: Male