MAUDE Adverse Event Report: MEDACTA INTERNATIONAL SA GMK SPHERE TOTAL KNEE SYSTEM; TIBIAL INSERT FIXED SPHERE FLEX SIZE 4/10 MM L E-CROSS

Model Number	02.12.E0410FL
Medical Device Problem Code	Device Appears to Trigger Rejection (1524)
Health Effect - Clinical Code	Medical device site infection (4845)
Date of Event	06/08/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Batch review performed on 10-06-2025.Lot 2410731: (b)(4) items manufactured and released on 17-06-2024, expiration date: 2029-06-02.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.Infection is a known possible complication of any surgery.Although no root cause can be established, there is no indication that any issue with the device may have caused or contributed to the event, and the document review does not indicate any potential manufacturing related cause.
Event or Problem Description
At about 5 months from priamary patient underwent revision surgery due to infection from unknown causes.Washout of knee was completed and change of tibial insert was performed.Surgeon sacrificed pcl during the washout (dair), consequently implanted device was a thicker (14mm) non-cruciate retaining liner.

• Brand Name: GMK SPHERE TOTAL KNEE SYSTEM
• Common Device Name: TIBIAL INSERT FIXED SPHERE FLEX SIZE 4/10 MM L E-CROSS
• 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: 22369026
• Report Number: 3005180920-2025-00560
• Device Sequence Number: 8226237
• Product Code: JWH
• UDI-Device Identifier: 07630971261754
• UDI-Public: 07630971261754
• Combination Product (Y/N): N
• Initial Reporter Country: AS
• 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: Company Representative
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial
• Report Date (Section B): 07/01/2025

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.E0410FL
• Device Lot Number: 2410731
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 06/07/2025
• Initial Report FDA Received Date: 07/01/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 06/17/2024
• 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