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

Catalog Number	5550-G-360
Medical Device Problem Codes	Malposition of Device (2616); Device Dislodged or Dislocated (2923)
Health Effect - Clinical Codes	Injury (2348); Joint Dislocation (2374)
Date of Event	01/21/2018
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 events for the reported lot.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
It was reported that patient's left knee was revised due to dislocation of the patella.Surgeon also reported that the femoral component looked rotated and revised the entire construct.
Additional Manufacturer Narrative
An event regarding dislocation involving a triathlon patella was reported.The event was not confirmed.Method & results: device evaluation and results: not performed as product was not returned medical records received and evaluation: no medical records were received for review with a clinical consultant device history review: all 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 reported lot.Conclusions: the exact cause of the event could not be determined because insufficient information was provided and/or the device was not returned.Further information such as product evaluation, pre- and post-operative x-rays, operative reports as well as patient history and follow-up notes are needed to complete the investigation for determining a root cause.No further investigation is required at this time.If additional information becomes available to indicate further evaluation is warranted, this record will be reopened.
Event or Problem Description
It was reported that patient's left knee was revised due to dislocation of the patella.Surgeon also reported that the femoral component looked rotated and revised the entire construct.

• 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: 7276913
• Report Number: 0002249697-2018-00449
• Device Sequence Number: 14048091
• Product Code: MBH
• UDI-Device Identifier: 07613327014778
• UDI-Public: 07613327014778
• Combination Product (Y/N): N
• Initial Reporter State: PA
• Initial Reporter Country: US
• PMA/510(K) Number: K141056
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2017
• Device Explanted Year: 2018
• Reporter Type: Manufacturer
• Report Source: health professional,other
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 03/26/2018

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: 06/30/2022
• Device Catalogue Number: 5550-G-360
• Device Lot Number: 8LXM
• Was Device Available for Evaluation?: No
• Initial Date Received by Manufacturer: 01/21/2018
• Supplement Date Received by Manufacturer: 02/27/2018
• Initial Report FDA Received Date: 02/16/2018
• Supplement Report FDA Received Date: 03/26/2018
• 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: 79 YR
• Patient Weight: 104