MAUDE Adverse Event Report: MEDACTA INTERNATIONAL SA GMK SPHERE TOTAL KNEE SYSTEM; GMK-SPHERE TIBIAL INSERT FIXED SPHERE FLEX SIZE 5/10 MM L

Model Number	02.12.0510FL
Medical Device Problem Code	Appropriate Device Problem Term/Code Not Available (3191)
Health Effect - Clinical Code	Joint Laxity (4526)
Date of Event	01/28/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Batch review performed on 04 february 2025: lot 2201074: (b)(4).Items manufactured and released on 21-april-2022.Expiration date: 2027-04-03.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.The surgeon revised liner height, which is a common practice to restore the joint stability.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 2 years 5 months after the primary, the patient came in reporting instability due to laxity and the cause of the laxity is unknown.The surgeon revised the liner (11mm to 13mm) to give the patient more stability.The surgery was completed successfully.

• Brand Name: GMK SPHERE TOTAL KNEE SYSTEM
• Common Device Name: GMK-SPHERE TIBIAL INSERT FIXED SPHERE FLEX SIZE 5/10 MM L
• 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: 21408528
• Report Number: 3005180920-2025-00101
• Device Sequence Number: 9382136
• Product Code: JWH
• UDI-Device Identifier: 07630030826733
• UDI-Public: 07630030826733
• Combination Product (Y/N): N
• Initial Reporter State: MO
• Initial Reporter Country: US
• PMA/510(K) Number: K121416
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2022
• Device Explanted Year: 2025
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial
• Report Date (Section B): 02/19/2025

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: 02.12.0510FL
• Device Lot Number: 2201074
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 01/28/2025
• Initial Report FDA Received Date: 02/19/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 04/21/2022
• Is the Device Labeled for Single Use? (Y/N): Yes
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Required Intervention
• Patient Sex: Unknown