MAUDE Adverse Event Report: ZIMMER BIOMET, INC. NEXGEN® LEGACY® PROLONG; PROSTHESIS, KNEE,

Catalog Number	00596204012
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Codes	Loss of Range of Motion (2032); Scar Tissue (2060)
Date of Event	01/09/2026
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
(b)(4).G2: foreign - event occurred in australia.The device will not be returned for analysis; however, an investigation of the reported event is in progress.Once the investigation is completed, a supplemental medwatch 3500a will be submitted.
Event or Problem Description
It was patient was revised approximately six years post implantation due to arthrolysis around the native patella.The surgeon revised the articular surface while removing scar tissue predominantly around the patella to improve patella tracking and increase range of motion.Attempts to obtain additional information have been made; however, no more is available.
Additional Manufacturer Narrative
This follow-up report is being submitted to relay additional information.The following sections were updated: b4, g3, g6, h2, h6, h11.Medical records provided were reviewed and confirmed the reported event.The device history records were not reviewed as the event was determined to be unrelated to the implanted device.Arthrofibrosis is defined as the development of fibrous scar tissue within or surrounding a joint.Arthrofibrosis is a known post-operative procedure-related complication that can occur from surgical implantation of new joint replacement as well as from previous injuries or surgical procedures.Scar tissue formation is a normal healing response; however, the buildup of such can result in pain, stiffness, limited range of motion, and difficulty properly ambulating.If excess scar tissue develops, conservative measures such as exercises or physical therapy would be attempted first.If these attempts fail, surgical intervention such as manipulation under anesthesia, arthroscopic arthrolysis, or open arthrotomy would become necessary to remove the fibrous tissue and restore joint function.As the reported even is a result of a procedure-related complication, the root cause was determined to be unrelated to the implants.If any further information is found which would change or alter any conclusions or information, a supplemental will be filed accordingly.Zimmer biomet will continue to monitor for trends.
Event or Problem Description
No further event information available at the time of this report.

• Brand Name: NEXGEN® LEGACY® PROLONG
• Common Device Name: PROSTHESIS, KNEE,
• Manufacturer (Section D): ZIMMER BIOMET, INC.; 1800 w. center st.; warsaw IN 46580
• Manufacturer (Section G): ZIMMER BIOMET, INC.; 1800 w. center st.; warsaw IN 46580
• Manufacturer Contact: jennifer rapsavage ; 56 e. bell dr.; warsaw, IN 46582 ; 5745260384
• MDR Report Key: 24199845
• Report Number: 0001822565-2026-00309
• Device Sequence Number: 9662060
• Product Code: JWH
• UDI-Device Identifier: 00889024211254
• UDI-Public: (01)00889024211254(17)210228(10)63277483
• Combination Product (Y/N): N
• Initial Reporter Country: AS
• PMA/510(K) Number: K173057
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2020
• Device Explanted Year: 2026
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 02/05/2026

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: Lay User/Patient
• Device Expiration Date: 02/28/2021
• Device Catalogue Number: 00596204012
• Device Lot Number: 63277483
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 01/09/2026
• Supplement Date Received by Manufacturer: 02/03/2026
• Initial Report FDA Received Date: 01/28/2026
• Supplement Report FDA Received Date: 02/05/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 02/25/2016
• 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
• Outcome Attributed to Adverse Event: Hospitalization; Required Intervention
• Patient Age: 66 YR
• Patient Sex: Unknown