MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH X3 TRIATHLON CS INSERT NO 6 9MM; PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER

Catalog Number	5531-G-609-E
Medical Device Problem Codes	Degraded (1153); Unstable (1667)
Health Effect - Clinical Code	Joint Laxity (4526)
Date of Event	10/23/2025
Type of Reportable Event	Serious Injury
Event or Problem Description
The following information was provided: as reported: "i am writing to document a knee revision of the poly insert due to slight instability and left knee pain.No noticeable damage or wear." rep confirmed no further information will be released by the hospital or surgeon.
Additional Manufacturer Narrative
Review of the device history records indicate that devices were manufactured and accepted into final stock with no reported discrepancies.There have been no other events for the lot referenced.If additional information is received, it will be provided in a supplemental report upon completion of the investigation.

• Brand Name: X3 TRIATHLON CS INSERT NO 6 9MM
• Common Device Name: PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER
• 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: alessandra chavez ; 3365 enterprise ave; weston, FL 33331 ; 9546280700
• MDR Report Key: 23542939
• Report Number: 0002249697-2025-01330
• Device Sequence Number: 21275978
• Product Code: JWH
• UDI-Device Identifier: 07613327337402
• UDI-Public: 07613327337402
• Combination Product (Y/N): N
• Initial Reporter State: FL
• Initial Reporter Country: US
• PMA/510(K) Number: K242831
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 11/13/2025

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: 5531-G-609-E
• Device Lot Number: DR5W14
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 10/23/2025
• Initial Report FDA Received Date: 11/13/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 02/24/2023
• 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 Sex: Unknown