MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRIATHLON PRIM TIB BPLATE CEMENTED SZ 4; PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER

Catalog Number	5520-B-400
Medical Device Problem Code	Malposition of Device (2616)
Health Effect - Clinical Code	Insufficient Information (4580)
Date of Event	12/24/2025
Type of Reportable Event	Serious Injury
Event or Problem Description
The following information was provided: primary tka surgery was performed on (b)(6) 2025.Revision surgery was performed due to the tibia was slightly varus on (b)(6) 2025.
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: TRIATHLON PRIM TIB BPLATE CEMENTED SZ 4
• 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-LIMERICK; raheen business park; limerick NA ; EI NA
• Manufacturer Contact: alessandra chavez ; 3365 enterprise ave; weston, FL 33331 ; 9546280700
• MDR Report Key: 24129692
• Report Number: 0002249697-2026-00045
• Device Sequence Number: 18738733
• Product Code: JWH
• UDI-Device Identifier: 07613327050325
• UDI-Public: 07613327050325
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: K242831
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Device Explanted Year: 2025
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Initial Reporter Occupation: Other
• Type of Report: Initial
• Report Date (Section B): 01/21/2026

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 Catalogue Number: 5520-B-400
• Device Lot Number: TPJ3A
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 12/24/2025
• Initial Report FDA Received Date: 01/21/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 02/16/2024
• 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: 75 YR
• Patient Sex: Female
• Patient Ethnicity: Non Hispanic
• Patient Race: Asian