MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRITANIUM BPLATE TRIATHLON S4; PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO

Model Number	5536-B-400
Medical Device Problem Code	Unstable (1667)
Health Effect - Clinical Code	Joint Laxity (4526)
Date of Event	12/16/2020
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
It was reported that the patient's right knee was revised due to instability.The surgeon's original plan was to revise a 4x19 cs insert to a 4x22 cs insert.However, the surgeon was not satisfied with the stability of the joint and revised the patient's knee from a cr knee to a ts knee.The patient's resurfaced patella was not revised.Rep confirmed there are no allegations against the revised devices, provided the primary usage sheet, and also confirmed that no further information will be released.

• Brand Name: TRITANIUM BPLATE TRIATHLON S4
• Common Device Name: PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO
• Manufacturer (Section D): STRYKER ORTHOPAEDICS-MAHWAH; 325 corporate drive; mahwah NJ 07430
• MDR Report Key: 11140815
• Report Number: 0002249697-2021-00076
• Device Sequence Number: 4043168
• Product Code: MBH
• UDI-Device Identifier: 07613327041491
• UDI-Public: 07613327041491
• Combination Product (Y/N): N
• Initial Reporter State: FL
• Initial Reporter Country: US
• PMA/510(K) Number: K141056
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2019
• Device Explanted Year: 2020
• Reporter Type: Manufacturer
• Report Source: health professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 01/08/2021

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: 09/30/2023
• Device Model Number: 5536-B-400
• Device Catalogue Number: 5536B400
• Device Lot Number: CTD25251
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 12/16/2020
• Initial Report FDA Received Date: 01/08/2021
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Hospitalization; Required Intervention
• Patient Age: 53 YR