MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRIATHLON SYMMETRIC X3 PATELLA; PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL

Catalog Number	5550-G-360
Medical Device Problem Codes	Break (1069); Osseointegration Problem (3003)
Health Effect - Clinical Codes	Injury (2348); Inadequate Osseointegration (2646)
Date of Event	08/22/2018
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Review of the product history records indicate devices were manufactured and accepted into final stock with no relevant reported discrepancies.There have been no other 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.Device not returned.
Event or Problem Description
Patient had his knee revised for laxity and patella loosening.The explanted patella was missing its pegs and there was no cement attached to the implant.There were chunks of cobalt cement in the joint space.The tibial component was removed and replaced with a universal baseplate and ts poly insert.The ps femoral component was retained.The patella was resected again and replaced with a 36mm x3 symmetric patella.Update (b)(6) 2018: it was reported through medwacth mw5079401 "the pt had a knee replacement on 2013.He had a revision surgery on 2018 where it was discovered the patella button had fractured at its pegs.The vendor rep was in the revision surgery".

• Brand Name: TRIATHLON SYMMETRIC X3 PATELLA
• Common Device Name: PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL
• Manufacturer (Section D): STRYKER ORTHOPAEDICS-MAHWAH; 325 corporate drive; mahwah NJ 07430
• MDR Report Key: 7884590
• Report Number: 0002249697-2018-02912
• Device Sequence Number: 1908473
• Product Code: JWH
• UDI-Device Identifier: 07613327014778
• UDI-Public: 07613327014778
• Combination Product (Y/N): N
• Initial Reporter State: MT
• Initial Reporter Country: US
• PMA/510(K) Number: K141056
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2013
• Device Explanted Year: 2018
• Reporter Type: Manufacturer
• Report Source: health professional,other
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 09/18/2018

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?: Yes
• Operator of Device: Health Professional
• Device Expiration Date: 11/30/2018
• Device Catalogue Number: 5550-G-360
• Device Lot Number: X3NE
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 08/22/2018
• Initial Report FDA Received Date: 09/18/2018
• 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: 58 YR
• Patient Weight: 100