MAUDE Adverse Event Report: SMITH & NEPHEW, INC. LGN PS HIGH FLEX XLPE SZ 5-6 10MM; PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL

Model Number	71453175
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Code	Wound Dehiscence (1154)
Date of Event	07/01/2021
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that total knee arthroplasty was performed.The legion¿ ps high flex xlpe insert size 5-6 was inserted, the patient's incision opened up approximately four weeks after.This adverse event was solved by washing out the patient and inserting a new legion¿ ps high flex xlpe insert size 5-6 on (b)(6) 2021.
Additional Manufacturer Narrative
H3, h6: the device, used in treatment, was not returned for evaluation and the reported event could not be confirmed.The clinical/medical investigation concluded that, smith and nephew has not received the explanted device and/or adequate materials to fully evaluate the complaint.If additional clinically relevant materials are later received, then the case may be re-opened for further evaluation.A complaint history review found related failures for the listed device; this failure mode will be monitored for future complaints for any necessary corrective actions.A review of the risk management file and instructions for use documents revealed this failure mode was previously identified.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 traumatic injury, joint tightness, patient reaction or 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 PS HIGH FLEX XLPE SZ 5-6 10MM
• 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: 12159298
• Report Number: 1020279-2021-05917
• Device Sequence Number: 3769159
• Product Code: JWH
• UDI-Device Identifier: 00885556487044
• UDI-Public: 00885556487044
• Combination Product (Y/N): N
• Initial Reporter Country: US
• PMA/510(K) Number: K071071
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: company representative
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 09/14/2021

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: 71453175
• Device Catalogue Number: 71453175
• Was Device Available for Evaluation?: No
• Initial Date Received by Manufacturer: 07/01/2021
• Supplement Date Received by Manufacturer: 09/10/2021
• Initial Report FDA Received Date: 07/13/2021
• Supplement Report FDA Received Date: 09/14/2021
• 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