MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRITANIUM BPLATE TRIATHLON S1; PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO

Catalog Number 5536B100

Device Problem Malposition of Device (2616)

Patient Problem Pain (1994)

Event Date 02/19/2024

Event Type  Injury  

Event Description

Patient reported left knee pain and noted product is "too large".Patient is scheduled for a revision on march 21st.As per medical review: "the additional radiographs confirm that the femoral implant is at the very least hyper flexed, out of the range of acceptability.It may well be oversized as well which can only be determined using digital or acetate templates.The tibial implant is also hyper flexed with some posterior overhang.".

Manufacturer Narrative

Reported event: an event regarding malposition involving a triathlon baseplate was reported.The event was confirmed via medical review.Method & results: product evaluation and results: material analysis, visual, functional, and dimensional inspections could not be performed as the device remains implanted.Clinician review: -clinician review: a review of the provided medical records by a clinical consultant indicated: "the additional radiographs confirm that the femoral implant is at the very least hyper flexed, out of the range of acceptability.It may well be oversized as well which can only be determined using digital or acetate templates.The tibial implant is also hyper flexed with some posterior overhang.In my opinion, coupling the hyper flexion of the femoral component with an unresurfaced patella, that certainly can cause impingement with pain and stiffness that can result in the need for revision surgery, possibly of all components with most likely resurfacing of the patella.I would consider this an iatrogenic situation." -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: patient reported left knee pain and noted product is "too large".A review of the provided medical records by a clinical consultant indicated: "the additional radiographs confirm that the femoral implant is at the very least hyper flexed, out of the range of acceptability.It may well be oversized as well which can only be determined using digital or acetate templates.The tibial implant is also hyper flexed with some posterior overhang.In my opinion, coupling the hyper flexion of the femoral component with an unresurfaced patella, that certainly can cause impingement with pain and stiffness that can result in the need for revision surgery, possibly of all components with most likely resurfacing of the patella.I would consider this an iatrogenic situation." no further investigation for this event is possible at this time.If devices and/or additional information become available after revision surgery to indicate further evaluation is warranted, this record will be reopened.H3 other text : device not returned.

• Brand Name: TRITANIUM BPLATE TRIATHLON S1
• Type of Device: 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: juana hiciano ; 325 corporate drive; mahwah, NJ 07430 ; 2018315000
• MDR Report Key: 19111548
• MDR Text Key: 340228018
• Report Number: 0002249697-2024-00600
• Device Sequence Number: 1
• Product Code: MBH
• UDI-Device Identifier: 07613327041477
• UDI-Public: 07613327041477
• Combination Product (y/n): N
• Reporter Country Code: US
• PMA/PMN Number: K141056
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Consumer
• Reporter Occupation: Other
• Type of Report: Initial
• Report Date: 04/15/2024

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
• Device Operator: Health Professional
• Device Catalogue Number: 5536B100
• Device Lot Number: CTD86812
• Was Device Available for Evaluation?: No
• Initial Date Manufacturer Received: Not provided
• Initial Date FDA Received: 04/15/2024
• Was Device Evaluated by Manufacturer?: Device Not Returned to Manufacturer
• Date Device Manufactured: 10/20/2022
• Is the Device Single Use?: Yes
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Initial
• Patient Sequence Number: 1
• Patient Outcome(s): Required Intervention; Hospitalization
• Patient Age: 60 YR
• Patient Sex: Female
• Patient Weight: 63 KG