MAUDE Adverse Event Report: SMITH & NEPHEW, INC. LGN PS HIGH FLEX XLPE SZ 5-6 15MM; PROSTHESIS, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONSTRAINED, CEMENTED, POLYMER/METAL

Model Number	71453224
Medical Device Problem Code	Break (1069)
Health Effect - Clinical Code	Foreign Body In Patient (2687)
Date of Event	09/23/2020
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that patient had s+n components since unknown date and while twisted left knee getting out of sand trap post broke.Patient outcome is unknown.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 associated device, used in treatment, was returned and evaluated.The lab analysis concluded that the as received component was visually inspected for signs of damage.The tibial insert showed signs of wear related damage to the articulating surface.The post was fractured near the posterior toe.Signs of deformation were observed on the anterior, posterior, medial, and lateral regions of the insert post.No material or manufacturing defects were observed in the course of this investigation.The clinical/medical evaluation concluded that this case reports a revision surgery was performed due to a broken post on the insert.The date of primary implantation is unknown; however, the insert was manufactured in 2011.Per email communication, the requested surgical reports and x-rays are not available.Therefore, the patient impact beyond the revision cannot be determined.Due to the limited information provided, no further clinical assessment is warranted.Should additional clinically relevant documentation become available, the clinical/medical task may be re-opened.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 do not have 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.Factors and/or some potential probable causes that could contribute to the reported event have been identified as overuse or excessive pressure on the joint, injury, infection and/or patient condition.Based on this investigation, the need for corrective action is not indicated.Should 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 PS HIGH FLEX XLPE SZ 5-6 15MM
• 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: 10708097
• Report Number: 1020279-2020-05578
• Device Sequence Number: 14385694
• Product Code: JWH
• UDI-Device Identifier: 00885556033913
• UDI-Public: 00885556033913
• Combination Product (Y/N): N
• Initial Reporter State: MO
• Initial Reporter Country: US
• PMA/510(K) Number: K071071
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Explanted Year: 2020
• Reporter Type: Manufacturer
• Report Source: company representative,health
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 08/12/2021

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: 10/16/2021
• Device Model Number: 71453224
• Device Catalogue Number: 71453224
• Device Lot Number: 11KM09674
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 10/08/2020
• Initial Date Received by Manufacturer: 09/23/2020
• Supplement Date Received by Manufacturer: 08/11/2021
• Initial Report FDA Received Date: 10/20/2020
• Supplement Report FDA Received Date: 08/12/2021
• 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