MAUDE Adverse Event Report: MEDACTA INTERNATIONAL SA GMK SPHERE TOTAL KNEE SYSTEM; GMK-SPHERE TIBIAL INSERT E-CROSS - FLEX 3R - 11MM

Model Number	02.12.E0311FR
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Code	Loss of Range of Motion (2032)
Date of Event	05/21/2026
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Batch review performed on 28 may 2026 lot.2405545: (b)(4) items manufactured and released on 12-apr-2024.Expiration date: 2029-03-19.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been sold with no similar reported events during the period of review.Root cause: the surgeon revised liner and performed a lateral release of the patella, which is a common practice to restore the joint mobility.There is no indication that any potential issue with the device may have caused or contributed to the event.
Event or Problem Description
At about 10 months after the primary, the patient came in presenting anterior knee pain and stiffness.The surgeon revised the patient`s natural patella and revised the flex 3r - 11mm insert to a flex 3r - 10mm to address the stiffness.The surgery was completed successfully.

• Brand Name: GMK SPHERE TOTAL KNEE SYSTEM
• Common Device Name: GMK-SPHERE TIBIAL INSERT E-CROSS - FLEX 3R - 11MM
• Manufacturer (Section D): MEDACTA INTERNATIONAL SA; strada regina; castel san pietro 6874 ; SZ 6874
• Manufacturer Contact: marco giannessi ; strada regina; castel san pietro 6874 ; SZ 6874
• MDR Report Key: 25442546
• Report Number: 3005180920-2026-00550
• Device Sequence Number: 20265638
• Product Code: JWH
• UDI-Device Identifier: 07630971261563
• UDI-Public: 07630971261563
• Combination Product (Y/N): N
• PMA/510(K) Number: K202022
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Device Explanted Year: 2026
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Initial Reporter Occupation: Other
• Type of Report: Initial
• Report Date (Section B): 06/09/2026

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: Health Professional
• Device Model Number: 02.12.E0311FR
• Device Lot Number: 2405545
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 05/21/2026
• Initial Report FDA Received Date: 06/09/2026
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Date Device Manufactured: 04/12/2024
• 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: Required Intervention
• Patient Sex: Female