MAUDE Adverse Event Report: SMITH & NEPHEW, INC. GNS II CMT TIB SIZE 4 {} RIGHT; PROSTH, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONST, CEMENTED, POLY/METAL/POLY

Catalog Number	71420184
Medical Device Problem Code	Loose or Intermittent Connection (1371)
Health Effect - Clinical Code	Injury (2348)
Date of Event	04/02/2019
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that a revision surgery was performed due to a aseptic loosening of tibia.
Additional Manufacturer Narrative
The associated complaint devices were not returned.The clinical/medical team concluded, the 2 undated x-rays provided confirm the tibial loosening as well as some osteolytic changes.Neither the operative report nor the explanted device were returned for analysis.The root cause of the reported tibial loosening cannot be concluded but migration due to osteolysis and poor support under the tibial base-plate cannot be ruled out.The patient impact beyond the reported aseptic loosening and revision surgery cannot be determined.No further clinical assessment can be rendered based on the information provided.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 parts revealed no prior complaints for the listed batches.Without the actual device involved our investigation cannot proceed.If the device or new information is received in the future, the complaints can be re-opened.No further actions are being taken at this time.

• Brand Name: GNS II CMT TIB SIZE 4 {} RIGHT
• Common Device Name: PROSTH, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONST, CEMENTED, POLY/METAL/POLY
• Manufacturer (Section D): SMITH & NEPHEW, INC.; 1450 brooks road; memphis TN 38116
• MDR Report Key: 8547204
• Report Number: 1020279-2019-01662
• Device Sequence Number: 2458652
• Product Code: JWH
• UDI-Device Identifier: 03596010206343
• UDI-Public: 03596010206343
• Combination Product (Y/N): N
• Initial Reporter Country: NZ
• PMA/510(K) Number: K951987
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2017
• Device Explanted Year: 2017
• Reporter Type: Manufacturer
• Report Source: company representative,foreig
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 10/25/2019

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 Catalogue Number: 71420184
• Device Lot Number: 16MM08331
• Initial Date Received by Manufacturer: 04/02/2019
• Supplement Date Received by Manufacturer: 04/02/2019
• Initial Report FDA Received Date: 04/24/2019
• Supplement Report FDA Received Date: 10/25/2019
• 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: Hospitalization; Required Intervention