MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH NO 7 TRIATH TS PLUS TIB INS X3 POLY 11MM; Prosthesis, Knee, Patellofemorotibial, Semi-Constrained, Cemented, Polymer

Catalog Number	5537-G-711
Medical Device Problem Codes	Degraded (1153); Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Codes	Osteolysis (2377); Inadequate Osseointegration (2646)
Date of Event	05/06/2026
Type of Reportable Event	Serious Injury
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.
Event or Problem Description
The following information was provided: poly was pitted and femur had no rough spots or any blemishes that would¿ve caused it.Revision performed.Update: left knee revision for possible femoral loosening, cause unknown but suspected to be aseptic loosening until poly was discovered and thought of potential osteolysis being the cause.

• Brand Name: NO 7 TRIATH TS PLUS TIB INS X3 POLY 11MM
• 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: anna ryan ; raheen business park; limerick, NJ NA ; EI NA ; +353()61498200
• MDR Report Key: 25300330
• Report Number: 0002249697-2026-00443
• Device Sequence Number: 9517646
• Product Code: JWH
• UDI-Device Identifier: 07613327027464
• UDI-Public: 07613327027464
• Combination Product (Y/N): N
• Initial Reporter State: NY
• Initial Reporter Country: US
• PMA/510(K) Number: K242831
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2019
• Device Explanted Year: 2026
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Type of Report: Initial,Followup
• Report Date (Section B): 10/02/2026

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: 11/30/2023
• Device Catalogue Number: 5537-G-711
• Device Lot Number: 7856PN
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: No
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 05/06/2026
• Supplement Date Received by Manufacturer: 09/10/2026
• Initial Report FDA Received Date: 05/27/2026
• Supplement Report FDA Received Date: 10/02/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 11/28/2018
• 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: 68 YR
• Patient Sex: Male