MAUDE Adverse Event Report: ARTHREX, INC. IBALANCE TKA BEARING, PS SIZE 7, 10MM; PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL

Model Number IBALANCE TKA BEARING, PS SIZE 7, 10MM

Device Problems Loose or Intermittent Connection (1371); Unstable (1667)

Patient Problems Fall (1848); Failure of Implant (1924); Pain (1994)

Event Date 06/08/2018

Event Type  Injury  

Manufacturer Narrative

No further patient information was provided at the time of this report or made available in response to arthrex¿s follow-up requests.The device was not returned for evaluation and the contribution of the device to the reported event could not be determined.The information received regarding the event is not sufficient to determine the cause of the event.A dhr review for this catalog number, ar-503-bh10 and lot number, 113601221 combination found no related information.

Event Description

It was initially reported by patient through the arthrex website, that the patient had total knee replacement procedure on both knees using arthrex products.(reference cc138269) patient provided the following information 2/13/2018: initial surgery was (b)(6) 2013.Two years after surgery patient started to have swelling and pain in his knee.Surgeon had drained patient's knee three different times (around every 6 months), which brought him no relief.Surgeon informed patient that the compound (cement) used to adhere the implant was coming loose and he was most likely going to require a replacement.Patient stated his left knee is getting worse and his knee "slips out of place".Patient reported instability and pain in both knees that is so bad that sometimes he falls.Patient said his right knee is starting to have the same problems.When patient walks both knees shift.Patient stated he has pictures that show a "separation" of the implant.Arthrex requested that if a revision is performed, would he be willing to release the product to arthrex so that the implants could be inspected and so arthrex could report the findings back to patient.The following arthrex devices were implanted during the (b)(6) 2013 bi-lateral tka procedure: ar-503-ttth, lot 108761229, qty1.Ar-503-ttth, lot 108761238, qty 1.Ar-503-bh10, lot 113601221, qty 2.Ar-503-pslj, lot 108761215, qty 1.Ar-503-psrj, lot 108761219, qty 1.Ar-504-psd0, lot 654468, qty 2.On 6/5/2018 notice was received from patient that he is scheduled for left total knee revision surgery on (b)(6) 2018.Patient states revision is being performed due to left knee becoming loose and unstable.Original implant surgeon is scheduled to perform the revision procedure.Patient is requesting that his explanted devices be returned to arthrex for evaluation.Patient also stated that in the near future his right knee will need to be replaced for the same reasons.Additional information obtained 6/26/2018: arthrex has received confirmation that the planned revision procedure took place as scheduled on (b)(6) 2018.The following are the implants that were explanted on (b)(6) 2018: ar-503-ttth, lot 108761229, qty 1.Ar-503-bh10, lot 113601221, qty 1.Ar-503-pslj, lot 108761215, qty 1.Ar-504-psd0, lot 654468, qty 1.

Manufacturer Narrative

The evaluation revealed that the returned implant has inconstant wear patterns between the condyles on the articulating surface.Damage observed on the a, b, and c surfaces (articulating / non-articulating surface) most likely occurred during the extraction of the implant.At the current time the cause of the event cannot be determined.

• Brand Name: IBALANCE TKA BEARING, PS SIZE 7, 10MM
• Type of Device: PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL
• Manufacturer (Section D): ARTHREX, INC.; 1370 creekside boulevard; naples FL 34108 1945
• MDR Report Key: 7703843
• MDR Text Key: 114539459
• Report Number: 1220246-2018-00557
• Device Sequence Number: 1
• Product Code: JWH
• Combination Product (y/n): N
• PMA/PMN Number: K051726
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: health professional,user faci
• Type of Report: Initial,Followup
• Report Date: 09/04/2018

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
• Device Operator: No Information
• Device Expiration Date: 08/31/2017
• Device Model Number: IBALANCE TKA BEARING, PS SIZE 7, 10MM
• Device Catalogue Number: AR-503-BH10
• Device Lot Number: 113601221
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 08/14/2018
• Initial Date Manufacturer Received: 06/26/2018
• Initial Date FDA Received: 07/19/2018
• Supplement Dates Manufacturer Received: 06/26/2018
• Supplement Dates FDA Received: 09/04/2018
• Is This a Reprocessed and Reused Single-Use Device?: No
• Patient Sequence Number: 1
• Patient Outcome(s): Other