MAUDE Adverse Event Report: ENCORE MEDICAL L.P. EMPOWR PS KNEE; EMPOWR PS KNEETM TIBIAL INSERT, SIZE 6 BRIDGE DOWN, 11MM

Model Number	343-11-766
Health Effect - Clinical Codes	Failure of Implant (1924); No Code Available (3191)
Date of Event	11/01/2017
Type of Reportable Event	Serious Injury
Event or Problem Description
Revision surgery - the patient had weight loss surgery and lost a lot of weight.The patient's knee felt loose due to the weight loss and the surgeon went in and replaced the size 11 insert with a size 8 insert.The surgeon from the first surgery did not put in a patella implant originally, but instead resurfaced it.So during the revision, the surgeon put in a patella implant.The original implants for the femur and baseplate were not removed during the revision.
Additional Manufacturer Narrative
The reason for this revision surgery was the patient's knee felt loose due to the weight loss.The in-vivo length of patient service for the implant was 9 months.There is no information in this complaint about any patient injuries, activities, or accidents that may have contributed to the need for this revision surgery.There are no reported pre-existing patient health conditions.The healthcare professional indicated there was no delay in surgery and another suitable device was available for use.The revision surgery was completed as intended.The device was disposed of at the hospital and not made available to djo surgical for examination.A review of the implant device history records (dhr) shows that the reported component used in the previous surgery met design and manufacturing requirements.There were no non-conforming material reports (ncmrs) associated with the product that may have contributed to the event.The device was within its expiration date at the time of use during the previous surgery.Customer complaint history of the reported device showed no present trends or on-going issues that are in need of review.This event is deemed to be non-product related.The root cause of this complaint was a revision surgery due to loosening.Agent has clearly mentioned that the patient had weight loss surgery and lost a lot of weight, it implies that the loosening has occurred due to sudden weight loss or patient activities.No additional information was submitted with the complaint regarding pre-existing conditions of the patient or any activities that may have contributed to the event and hence a definitive root cause cannot be determined.Inventory containment is not required as there are no indications of a product or process issue affecting implant safety or effectiveness.
Additional Manufacturer Narrative
Even though agent reported "replaced the size 11 insert with a size 8 insert", it should have been reported as "replaced the size 6-11mm insert with a size 6-14mm insert.".
Event or Problem Description
The patient had weight loss surgery and lost a lot of weight.The patient's knee felt loose due to the weight loss and the surgeon went in and replaced the size 6-11mm insert with a size 6-14mm insert.The surgeon from the first surgery did not put in a patella implant originally, but instead resurfaced it.So during the revision, the surgeon put in a patella implant.The original implants for the femur and baseplate were not removed during the revision.

• Brand Name: EMPOWR PS KNEE
• Common Device Name: EMPOWR PS KNEETM TIBIAL INSERT, SIZE 6 BRIDGE DOWN, 11MM
• Manufacturer (Section D): ENCORE MEDICAL L.P.; 9800 metric blvd; austin TX 78758 5445
• MDR Report Key: 7050502
• Report Number: 1644408-2017-01043
• Device Sequence Number: 13735666
• Product Code: JWH
• UDI-Device Identifier: 00888912172097
• UDI-Public: (01)00888912172097
• Combination Product (Y/N): N
• Initial Reporter State: CO
• Initial Reporter Country: US
• PMA/510(K) Number: K160342
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2017
• Device Explanted Year: 2017
• Reporter Type: Manufacturer
• Report Source: company representative
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 01/15/2018

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: 06/28/2021
• Device Model Number: 343-11-766
• Device Catalogue Number: 343-11-766
• Device Lot Number: 272U1006
• Was Device Available for Evaluation?: No
• Was the Report Sent to FDA?: No
• Initial Date Received by Manufacturer: 11/01/2017
• Supplement Date Received by Manufacturer: 11/24/2017; 01/15/2018
• Initial Report FDA Received Date: 11/21/2017
• Supplement Report FDA Received Date: 12/12/2017; 01/15/2018
• 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: Required Intervention
• Patient Age: 69 YR