MAUDE Adverse Event Report: SMITH & NEPHEW, INC. GNS II BICONVEX PAT 23MM; PROSTH, KNEE, PATELLOFEMOROTIBIAL, SEMI-CONST, CEMENTED, POLY/METAL/POLY

Model Number	71420566
Medical Device Problem Code	Material Separation (1562)
Health Effect - Clinical Code	Pain (1994)
Date of Event	05/31/2019
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that a revision surgery was performed due to pain, disassociation of the patella.The device was replaced with a genesis ii resurfacing patella.
Additional Manufacturer Narrative
The device, used in treatment, was not returned for evaluation and the reported event could not be confirmed.The clinical / medical investigation concluded that, without the requested relevant clinical information, a thorough medical investigation cannot be rendered.Should any additional medical information be provided, this complaint will be re-assessed.A review of complaint history did not reveal additional complaints for the listed batch.A review of the risk management file and instructions for use documents revealed this failure mode was previously identified.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 have no reason to suspect that the product failed to meet any product specifications at the time of manufacture.Some potential probable causes could include but are not limited to abnormal loading or device fit / sizing.Based on this investigation, the need for corrective action is not indicated.Without the return of the actual product involved or product information, our investigation could not proceed.Should the device or additional information be received, the complaint will be reopened.No further investigation warranted for this complaint; however, we will continue to monitor for future complaints and investigate as necessary.

• Brand Name: GNS II BICONVEX PAT 23MM
• 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: 9315157
• Report Number: 1020279-2019-03988
• Device Sequence Number: 607238
• Product Code: JWH
• UDI-Device Identifier: 03596010208255
• UDI-Public: 03596010208255
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: K951987
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2019
• Device Explanted Year: 2019
• Reporter Type: Manufacturer
• Report Source: foreign,health professional,u
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 02/06/2020

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 Model Number: 71420566
• Device Catalogue Number: 71420566
• Device Lot Number: 18FM22062
• Was Device Available for Evaluation?: No
• Initial Date Received by Manufacturer: 10/15/2019
• Supplement Date Received by Manufacturer: 01/31/2020
• Initial Report FDA Received Date: 11/13/2019
• Supplement Report FDA Received Date: 02/06/2020
• 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
• Patient Age: 83 YR
• Patient Weight: 68