MAUDE Adverse Event Report: SMITH & NEPHEW, INC. LGN CR HIGH FLEX XLPE SZ 5-6 11MM; PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL

Model Number	71453122
Medical Device Problem Code	Device Appears to Trigger Rejection (1524)
Health Effect - Clinical Codes	Unspecified Infection (1930); Osteolysis (2377)
Date of Event	12/01/2020
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
(b)(4).
Event or Problem Description
It was reported that, during a tkr washing, at the time of opening the patient, there was a large amounts of pus present, so the tkr implants were removed due to infection and cement spacer was inserted.No other complications were reported.All available information has been disclosed.If additional information should become available, a supplemental report will be submitted accordingly.
Additional Manufacturer Narrative
H3, h6: the device, used in treatment, was not returned for evaluation.The images provided were reviewed and could not confirm the stated failure mode.The clinical/medical investigation concluded that, one undated x-ray photo was provided for review; however, it does not contribute to the root cause of the reported infection.Based on the limited information provided the clinical root cause for the reported infection could not be determined.There is no evidence to support that the smith and nephew device contributed to the reported infection.The future impact to the patient beyond the revision cannot be determined.Should additional information become available this issue can be re-elevated.No further clinical assessment is warranted at this time.A review of the complaint history for the listed part revealed no prior complaints for the listed failure mode with the same batch number.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 are 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.

• Brand Name: LGN CR HIGH FLEX XLPE SZ 5-6 11MM
• Common Device Name: PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL
• Manufacturer (Section D): SMITH & NEPHEW, INC.; 1450 brooks rd.; memphis TN 38116
• MDR Report Key: 11042018
• Report Number: 1020279-2020-07591
• Device Sequence Number: 11435917
• Product Code: JWH
• UDI-Device Identifier: 00885556035139
• UDI-Public: 00885556035139
• Combination Product (Y/N): N
• Initial Reporter Country: AS
• PMA/510(K) Number: K071071
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: company representative,foreig
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 09/01/2021

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 Model Number: 71453122
• Device Catalogue Number: 71453122
• Device Lot Number: 18HM22661
• Was Device Available for Evaluation?: No
• Initial Date Received by Manufacturer: 12/01/2020
• Supplement Date Received by Manufacturer: 08/31/2021
• Initial Report FDA Received Date: 12/18/2020
• Supplement Report FDA Received Date: 09/01/2021
• 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: Required Intervention