MAUDE Adverse Event Report: SMITH & NEPHEW, INC. PRO METAPH TIB STEM 18MM; PRSTHSIS,KNEE,PTLLFMOROTIBL,SMI-CNSTRND,CMNTD,POLYMR/MTAL/PLYMR

Catalog Number	71501010
Medical Device Problem Code	Insufficient Device Problem Information (3190)
Health Effect - Clinical Code	Pain (1994)
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that a revision surgery was performed due to right knee loosening and left knee pain.
Additional Manufacturer Narrative
The associated complaint devices were returned and evaluated.The lab analysis for the femoral, right tibial articulating insert, and left tibial articulating insert scratches on the femoral condyle articular surfaces that are along the radius are likely the result of articulation of the knee.The source of other scratches could not be determined from the information provided.No material or manufacturing deviations were observed in the course of this investigation.A review of the production documentation for the corresponding products did not reveal any deviation from the standard manufacturing processes.A review of complaint history for the listed part revealed no prior complaints for the listed batch/failure mode.The clinical/medical team concluded, this complaint was re-opened because the product returned.However, the only clinical information that has been provided is three pages of chart sticks that have been reviewed.No additional supporting documents have been provided to determine a root cause for the reported issues or patient impact.Therefore, no further clinical/medical assessment is warranted at this time.At this time, we have no reason to suspect that the product failed to meet any product specifications at the time of manufacture.Based on this investigation, the need for corrective action is not indicated.Should additional information be received, the complaint will be reopened.We consider this investigation closed.
Additional Manufacturer Narrative
The associated complaint devices were returned and evaluated.The lab analysis for the femoral, right tibial articulating insert, and left tibial articulating insert scratches on the femoral condyle articular surfaces that are along the radius are likely the result of articulation of the knee.The source of other scratches could not be determined from the information provided.No material or manufacturing deviations were observed in the course of this investigation.A review of the production documentation for the corresponding products did not reveal any deviation from the standard manufacturing processes.A review of complaint history for the listed part revealed no prior complaints for the listed batch/failure mode.The clinical/medical team concluded,for right knee.Based on the inter-operative findings that confirms loosening, in addition, to the pre-revision x-ray that confirms alignment, the revision findings, the age of the implant and the product evaluation, the root cause of the revision was age related wear.Although we cannot ruled out the articulation of the insert and the reported valgus position of the implant as a likely contributing factor of the reported pain and instability.For left knee.Based on the pre-revision x-ray that confirms proper alignment, the revision and the product evaluation the root cause of the revision was due to age related wear.Although we cannot ruled out the articulation of the insert and the reported valgus position of the implant as a likely contributing factor of the reported pain and instability.The future impact to the patient beyond the bilateral revision cannot be determined.At this time, we have no reason to suspect that the product failed to meet any product specifications at the time of manufacture.Based on this investigation, the need for corrective action is not indicated.

• Brand Name: PRO METAPH TIB STEM 18MM
• Common Device Name: PRSTHSIS,KNEE,PTLLFMOROTIBL,SMI-CNSTRND,CMNTD,POLYMR/MTAL/PLYMR
• Manufacturer (Section D): SMITH & NEPHEW, INC.; 1450 brooks road; memphis TN 38116
• MDR Report Key: 7760144
• Report Number: 1020279-2018-01488
• Device Sequence Number: 13782796
• Product Code: JWH
• UDI-Device Identifier: 03596010218391
• UDI-Public: 03596010218391
• Combination Product (Y/N): N
• Initial Reporter Country: US
• PMA/510(K) Number: K933958
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Explanted Year: 2018
• Reporter Type: Manufacturer
• Report Source: company representative,health
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 03/06/2019

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: 05/29/2015
• Device Catalogue Number: 71501010
• Device Lot Number: 05EM09406
• Was Device Available for Evaluation?: No
• Initial Date Received by Manufacturer: 07/12/2018
• Supplement Date Received by Manufacturer: 07/12/2018; 07/12/2018
• Initial Report FDA Received Date: 08/07/2018
• Supplement Report FDA Received Date: 02/05/2019; 03/06/2019
• 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: Other; Required Intervention