MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRIATHLON SYMMETRIC X3 PATELLA; PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO

Model Number	5550-G-360
Medical Device Problem Codes	Unstable (1667); Loss of Osseointegration (2408); Osseointegration Problem (3003)
Health Effect - Clinical Codes	Fall (1848); Pain (1994); Injury (2348); Ambulation or Postural Difficulties (2544)
Date of Event	09/07/2018
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 relevant reported discrepancies.There have been no other similar events for the lot referenced.It was noted that the device is not available for evaluation.Should additional information become available, it will be provided in a supplemental report upon completion of the investigation.
Event or Problem Description
Information received in follow-up includes an operative report for a right knee revision on (b)(6) 2018.Noted in the records are the following: ".Had a fall.She is now having symptoms of pain and presented today for operative intervention.Failed right knee arthroplasty with patellar loosening, instability, and extensor mechanism compromise.The patient's patellar component was grossly loose and free-floating." a cr femur, cs insert, and triathlon patella were revised to a ts femoral component with a stem and 4 augments, a ps insert, and a competitor patella.
Additional Manufacturer Narrative
Reported event: an event regarding revision due to pain, loosening and failure of patellar component is reported involving triathlon patella.The event was confirmed for failure of patellar component based on medical review.Method & results: product evaluation and results: product inspection: not performed because device was not returned.Clinical review: a review of the provided medical records and / or x-rays by a clinical consultant stated that: the following adverse events were identified: left: failed patellar component with resection arthroplasty, revision left knee, periprosthetic infection, multiple aspirations and infection.Right: patellar component failure and revision, 2nd revision for knee dislocation and patellar tendon rupture.Conclusion of assessment: the mechanisms of failure and causes of revision in both knees appeared dynamic and unrelated to the implants.This was a very complicated case in a patient with multiple comorbid conditions.Product history review: indicated all devices were manufactured and accepted into final stock with no reported discrepancies.Complaint history review: there have been no other similar events for the lot referenced.Conclusions: the event was reported about revision due to pain, loosening and failure of patellar component involving triathlon patella.The event was confirmed for failure of patellar component based on medical review.The exact cause of the event could not be determined because insufficient information was provided.Further information is needed to complete the investigation for determining its root cause.No further investigation for this event is possible at this time.If additional information become available to indicate further evaluation is warranted, this record will be reopened.H3 other text : device not returned.
Event or Problem Description
Information received in follow-up includes an operative report for a right knee revision on (b)(6) 2018.Noted in the records are the following: "had a fall.She is now having symptoms of pain and presented today for operative intervention.Failed right knee arthroplasty with patellar loosening, instability, and extensor mechanism compromise.The patient's patellar component was grossly loose and free-floating." a cr femur, cs insert, and triathlon patella were revised to a ts femoral component with a stem and 4 augments, a ps insert, and a competitor patella.

• Brand Name: TRIATHLON SYMMETRIC X3 PATELLA
• 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: 10206337
• Report Number: 0002249697-2020-01319
• Device Sequence Number: 11580844
• Product Code: MBH
• UDI-Device Identifier: 07613327014778
• UDI-Public: 07613327014778
• Combination Product (Y/N): N
• Initial Reporter State: KY
• Initial Reporter Country: US
• PMA/510(K) Number: K141056
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2009
• Device Explanted Year: 2018
• Reporter Type: Manufacturer
• Report Source: health professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 08/27/2020

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: 09/30/2014
• Device Model Number: 5550-G-360
• Device Catalogue Number: 5550-G-360
• Device Lot Number: 956A
• Was Device Available for Evaluation?: No
• Initial Date Received by Manufacturer: 06/09/2020
• Supplement Date Received by Manufacturer: 08/04/2020
• Initial Report FDA Received Date: 06/29/2020
• Supplement Report FDA Received Date: 08/27/2020
• 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: 59 YR
• Patient Weight: 118