MAUDE Adverse Event Report: SMITH & NEPHEW, INC. LGN PRESSFIT STEM 16MM X 160MM; PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL

Catalog Number	71424049
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Code	Medical device site infection (4845)
Date of Event	09/09/2024
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Internal complaint reference: (b)(4).H3, h6: this complaint was opened by smith+nephew to document a patient complication reported that includes reference to the use of a smith+nephew product without evidence about a specific product problem.The reported complication relates to known inherent procedural risks that are appropriately documented in our risk files.Smith+nephew will continue to monitor trends in accordance with our post-market surveillance process and take necessary action as required if anticipated severity and/or occurrence rates are exceeded.Smith+nephew has no reason to suspect that the product failed to meet any specifications at the time of manufacture.Based on our review of all currently available information, we are unable to confirm a relationship between the reported event and the device or identify a definitive root cause.However, as the use of our product cannot be excluded as a potential cause or contributory factor to the reported issue, we are submitting this report in accordance with applicable regulations.If additional investigative findings or information becomes available that alters the conclusions of this report, a follow-up report will be submitted as required.
Event or Problem Description
It was reported that after a tka performed at an unknown date on 2021, a periprosthetic infection was identified in the patient, causing a revision surgery that took place on (b)(6) 2024.In this revision the lgn pressfit stem 16mm x 160mm, lgn rev tibia base sz 3 lt, legion con art ins 9mm sz 3-4 and an unkn legion knee impl were explanted.Current patient status is unknown.
Additional Manufacturer Narrative
Corrected data: e4 (reporter did not submit report to fda), h6 (type of investigation).Results of investigation: the devices were not returned for evaluation; therefore, a device analysis could not be performed.A review of the stem, insert and tibial baseplate's production order did not reveal a manufacturing abnormality that could have caused or contributed to the reported incident.A review of complaint history for the part number over the past 12 months and for the batch number based on historical data of the device did not reveal similar events for the listed insert and tibial baseplate.A review of complaint history revealed a similar event for the listed stem over the previous 12 months, but no similar events for the batch based on the historical data, this failure mode will be monitored for future complaints for any necessary corrective actions.A review of the instructions for use documents for knee systems revealed that acute post-surgical wound infection has been identified as a possible adverse effect.Active, local infection or previous intra-articular infections are identified in contraindications for total knee replacement.A review of the risk management files revealed this failure mode was previously identified.The anticipated risk level is still adequate.A historical review concluded that there are no prior actions related to these products and event.A review of the sterilization records revealed the batches were sterilized within normal parameters.At this time, we have no evidence to conclude that the products failed to meet any specifications at the time of manufacture.Factors that could contribute to the reported event include injury, patient condition and/or medical history.Based on this investigation, the need for corrective action is not indicated.Should the devices 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 PRESSFIT STEM 16MM X 160MM
• Common Device Name: PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL
• Manufacturer (Section D): SMITH & NEPHEW, INC.; 1450 brooks rd.; memphis TN 38116
• Manufacturer (Section G): SMITH & NEPHEW, INC.; 1450 brooks rd.; memphis TN 38116
• Manufacturer Contact: holly topping ; 7000 west william cannon drive; austin, TX 78735 ; 5123913905
• MDR Report Key: 20407629
• Report Number: 1020279-2024-02045
• Device Sequence Number: 6262011
• Product Code: JWH
• UDI-Device Identifier: 03596010546814
• UDI-Public: 3596010546814
• Combination Product (Y/N): N
• Initial Reporter Country: IT
• PMA/510(K) Number: K072531
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Explanted Year: 2024
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Other,Foreign,Health Professional,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 11/12/2024

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 Catalogue Number: 71424049
• Device Lot Number: 19DSM0492
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 09/18/2024
• Supplement Date Received by Manufacturer: 11/05/2024
• Initial Report FDA Received Date: 10/09/2024
• Supplement Report FDA Received Date: 11/12/2024
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Date Device Manufactured: 07/30/2019
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Concomitant Medical Products and Therapy/Usage Dates: LEGION CON ART INS 9MM SZ 3-4//71420523//C1313940.; LGN REV TIBIA BASE SZ 3 LT//71424003//20FM08510.
• Outcome Attributed to Adverse Event: Required Intervention
• Patient Age: 70 YR
• Patient Sex: Unknown