MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRITANIUM BPLATE TRIATHLON S2; PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO

Catalog Number	5536B200
Medical Device Problem Code	Loss of Osseointegration (2408)
Health Effect - Clinical Code	Inadequate Osseointegration (2646)
Date of Event	07/29/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Review of the device history records indicate devices were manufactured and accepted into final stock with no reported discrepancies.There have been no other events for the lot referenced.
Event or Problem Description
Loosening of the tibial baseplate of a mako tka performed in march was confirmed.On (b)(6) 2025 extraction surgery was performed and a cement mold containing antibiotics was placed thinking about the possibility of infection.A revision tka is planned at a later date.In the surgeon's opinion, the initial surgery was performed with a uka skin incision, which resulted in poor visibility during surgery, causing the tibia to overhang medially, and the lateral side of the tibia to sink after surgery.

• Brand Name: TRITANIUM BPLATE TRIATHLON S2
• 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-LIMERICK; raheen business park; limerick NA ; EI NA
• Manufacturer Contact: brad curtis ; 325 corporate drive; mahwah, NJ 07430 ; 2018315000
• MDR Report Key: 22873754
• Report Number: 0002249697-2025-00906
• Device Sequence Number: 5776145
• Product Code: MBH
• UDI-Device Identifier: 07613327041590
• UDI-Public: 07613327041590
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: K141056
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Device Explanted Year: 2025
• Reporter Type: Manufacturer
• Report Source: Other,Health Professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 08/22/2025

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: 5536B200
• Device Lot Number: CTD143307
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 07/29/2025
• Initial Report FDA Received Date: 08/22/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 11/25/2024
• 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: Hospitalization; Required Intervention
• Patient Sex: Unknown