MAUDE Adverse Event Report: SMITH & NEPHEW, INC. LGN OX CONSTRAINED FEM 7 LT; PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL

Model Number	71421167
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Code	Unspecified Infection (1930)
Date of Event	06/11/2020
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that the patient had revision surgery for an infection, for that reason all the implants were removed and it was implanted a new cement mold and a poly tibia.The surgeon reports that the implants did not influence the development of the infection.All available information has been disclosed.If additional information should become available, a supplemental report will be submitted accordingly.
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 the complaint details, the 2nd left tka revision was performed due to infection.Reportedly, no medical documentation will be provided, as the ¿surgeon does not blame the implants¿ for the infection.S+n has not received the device and/or adequate documentation to fully evaluate the root cause of the reported event; however, infection was reported.The patient impact beyond the reported infection and subsequent 2nd revision could not 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.At this time, we have no reason to suspect that the product failed to meet any product specifications at the time of manufacture.A review of the risk management file and instructions for use documents revealed this failure mode and potential harm was previously identified.A review of sterilization documents indicated that the product was sterilized according to sterilization release documentation.Infection, a potential complication associated with any surgery, can occur and 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 or product information, 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 OX CONSTRAINED FEM 7 LT
• 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: 10237672
• Report Number: 1020279-2020-02967
• Device Sequence Number: 2842259
• Product Code: JWH
• UDI-Device Identifier: 03596010543868
• UDI-Public: 03596010543868
• Combination Product (Y/N): N
• Initial Reporter Country: AS
• PMA/510(K) Number: K043440
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Explanted Year: 2020
• Reporter Type: Manufacturer
• Report Source: company representative,foreig
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 06/24/2021

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?: No
• Operator of Device: Health Professional
• Device Expiration Date: 03/30/2019
• Device Model Number: 71421167
• Device Catalogue Number: 71421167
• Device Lot Number: 09BM04264A
• Was Device Available for Evaluation?: No
• Initial Date Received by Manufacturer: 06/11/2020
• Supplement Date Received by Manufacturer: 06/23/2021
• Initial Report FDA Received Date: 07/06/2020
• Supplement Report FDA Received Date: 06/24/2021
• 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