MAUDE Adverse Event Report: SMITH & NEPHEW, INC. LGN CR HIGH FLEX XLPE SZ 3-4 12MM; PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED,

Model Number	71453184
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Code	Unspecified Infection (1930)
Date of Event	04/12/2021
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that after a tka surgery, the patient experienced an infection.A revision surgery was performed on (b)(6) 2021 to treat this adverse event.The surgeon went in through the previous incision, washed the knee and the lgn cr high flex xlpe sz 3-4 12 mm was explanted and a new insert (lgn cr high flex xlpe sz 3-4 13 mm) was implanted.The patient outcome is unknown.
Additional Manufacturer Narrative
The device, used in treatment, was not returned for evaluation and the reported event could not be confirmed.The clinical/medical investigation concluded that, per email correspondence, the requested medical/surgical records and x-rays are not available; therefore, a thorough medical assessment cannot be rendered.The clinical root cause for the infection remains unknown.The patient impact beyond the reported infection and revision procedure itself cannot be determined.Should additional information/documentation become available, the clinical/medical task may be re-opened for further evaluation.No further medical assessment is warranted at this time.A review of complaint history did not reveal additional complaints for the listed batch.A review of the manufacturing records did not reveal a manufacturing abnormality that could have caused or contributed to the reported incident.A review of the risk management file and instructions for use documents revealed this failure mode was previously identified.A review of the sterilization records revealed the batch was sterilized within normal parameters.At this time, we have no reason to suspect that the product failed to meet any product specifications at the time of manufacture.Possible causes could include but not limited to contamination, patient reaction, and post-operative healing issue.Based on this investigation, the need for corrective action is not indicated.Without the return of the actual product involved, our investigation could not proceed.Should the device or additional information be received, the complaint will be reopened.No further investigation is warranted for this complaint; however, we will continue to monitor for future complaints and investigate as necessary.We consider this investigation closed.

• Brand Name: LGN CR HIGH FLEX XLPE SZ 3-4 12MM
• Common Device Name: PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED,
• Manufacturer (Section D): SMITH & NEPHEW, INC.; 1450 brooks rd.; memphis TN 38116
• MDR Report Key: 11784036
• Report Number: 1020279-2021-03830
• Device Sequence Number: 16961068
• Product Code: JWH
• UDI-Device Identifier: 00885556487396
• UDI-Public: 00885556487396
• Combination Product (Y/N): N
• Initial Reporter Country: AS
• PMA/510(K) Number: K071071
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Explanted Year: 2021
• Reporter Type: Manufacturer
• Report Source: company representative,foreig
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 08/20/2021

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: 04/12/2026
• Device Model Number: 71453184
• Device Catalogue Number: 71453184
• Device Lot Number: 16DM10528
• Was Device Available for Evaluation?: No
• Initial Date Received by Manufacturer: 04/12/2021
• Supplement Date Received by Manufacturer: 08/18/2021
• Initial Report FDA Received Date: 05/06/2021
• Supplement Report FDA Received Date: 08/20/2021
• 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