MAUDE Adverse Event Report: MEDACTA INTERNATIONAL SA GMK SPHERE TOTAL KNEE SYSTEM; GMK-SPHERE TIBIAL INSERT E-CROSS - FLEX 2L - 12MM

Model Number	02.12.E0212FL
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Codes	Loss of Range of Motion (2032); Implant Pain (4561)
Date of Event	08/13/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Batch review performed on 19 aug 2025.Lot: 2309306: (b)(4) items manufactured and released on 05-nov-2023.Expiration date: 2028-may-17.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been sold with no similar reported event during the period of review.Conclusions: the surgeon revised liner height, which is a common practice to restore 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 5 months, the patient came in reporting stiffness.The surgeon downsized the insert (from 12 to 10 mm) to give the patient more range of motion.The surgery was completed successfully.

• Brand Name: GMK SPHERE TOTAL KNEE SYSTEM
• Common Device Name: GMK-SPHERE TIBIAL INSERT E-CROSS - FLEX 2L - 12MM
• Manufacturer (Section D): MEDACTA INTERNATIONAL SA; strada regina; castel san pietro, switzerland 6874 ; SZ 6874
• Manufacturer (Section G): MEDACTA INTERNATIONAL SA; strada regina; castel san pietro, switzerland 6874 ; SZ 6874
• Manufacturer Contact: marco giannessi ; strada regina; castel san pietro, switzerland 6874 ; SZ 6874
• MDR Report Key: 22936837
• Report Number: 3005180920-2025-00837
• Device Sequence Number: 21301915
• Product Code: JWH
• UDI-Device Identifier: 07630971261358
• UDI-Public: 07630971261358
• Combination Product (Y/N): N
• Initial Reporter Country: US
• PMA/510(K) Number: K202022
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Device Explanted Year: 2025
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Other
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial
• Report Date (Section B): 09/02/2025

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.E0212FL
• Device Lot Number: 2309306
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 08/13/2025
• Initial Report FDA Received Date: 09/02/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 11/05/2023
• 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 Age: 57 YR
• Patient Sex: Female
• Patient Weight: 64 KG
• Patient Race: White