MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRIATHLON PRIM CEM FXD BPLT #5; PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO

Catalog Number	5520B500
Medical Device Problem Code	Loss of Osseointegration (2408)
Health Effect - Clinical Codes	Pain (1994); Inadequate Osseointegration (2646); Swelling/ Edema (4577)
Date of Event	12/01/2024
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
An event regarding loosening involving a triathlon baseplate was reported.The event was not confirmed.Method & results: product evaluation and results: material analysis, visual, functional and dimensional inspections could not be performed as the device was not returned.Clinician review: no medical records were received for review with a clinical consultant.Product history review: review of the device history records indicate devices were manufactured and accepted into final stock with no relevant reported discrepancies.Complaint history review: there have been no other similar events for the lot referenced.Conclusions: it was reported that the patient was revised due to loosening.The exact cause of the event could not be determined because insufficient information was provided.Further information such as return of the device, pathology reports, pre- and post-operative x-rays and the revision operative report as well as patient history and follow-up notes are needed to complete the investigation for determining root cause.No further investigation for this event is possible at this time.If devices and/or additional information become available to indicate further evaluation is warranted, this record will be reopened.
Event or Problem Description
Claimant, through counsel, alleges that he underwent a right tka on (b)(6) 2016, and was implanted with a triathlon ps knee.It is alleged that in (b)(6) 2024, he followed up with a surgeon as the knee was swollen and constantly painful.He was revised in (b)(6) of 2024, due to alleged loosening.

• Brand Name: TRIATHLON PRIM CEM FXD BPLT #5
• 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: 23080637
• Report Number: 0002249697-2025-00994
• Device Sequence Number: 9996944
• Product Code: MBH
• UDI-Device Identifier: 07613327041057
• UDI-Public: 07613327041057
• Combination Product (Y/N): N
• Initial Reporter State: TN
• Initial Reporter Country: US
• PMA/510(K) Number: K141056
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2016
• Device Explanted Year: 2024
• Reporter Type: Manufacturer
• Report Source: Other
• Initial Reporter Occupation: Other
• Type of Report: Initial
• Report Date (Section B): 09/17/2025

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 Expiration Date: 08/31/2021
• Device Catalogue Number: 5520B500
• Device Lot Number: BCT3J
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 08/21/2025
• Initial Report FDA Received Date: 09/17/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 08/25/2016
• 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: Male