MAUDE Adverse Event Report: MEDACTA INTERNATIONAL SA GMK-SPHERE PATELLA RESURFACING SIZE 4; KNEE PATELLAR IMPLANT

Model Number	02.07.0036RP
Medical Device Problem Code	Device Dislodged or Dislocated (2923)
Health Effect - Clinical Code	Appropriate Clinical Signs, Symptoms and Conditions Term/Code Not Available (4581)
Date of Event	02/07/2023
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Batch review performed on (b)(6) 2023: lot 2000634: 330 items manufactured and released on (b)(6) 2020.Expiration date: 2025-02-15.No anomalies found related to the problem.To date, 320 items of the same lot have been sold without any similar reported event during the period of review.
Event or Problem Description
At about 2 years 7 months after the primary, revision surgery due to patellar implant subluxation.Widening of the patellar tendon possibly following progressive tearing of the internal parapatellar athrotomy.No loosening of the implants, no infection, no trauma.The surgeon revised successfully the patella implant (same size).

• Brand Name: GMK-SPHERE PATELLA RESURFACING SIZE 4
• Common Device Name: KNEE PATELLAR IMPLANT
• 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: stefano baj ; strada regina; castel san pietro, switzerland 6874 ; SZ 6874
• MDR Report Key: 16502651
• Report Number: 3005180920-2023-00117
• Device Sequence Number: 6129333
• Product Code: JWH
• UDI-Device Identifier: 07630030815775
• UDI-Public: 07630030815775
• Combination Product (Y/N): N
• Initial Reporter Country: SZ
• PMA/510(K) Number: K113571
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2020
• Device Explanted Year: 2023
• 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): 03/08/2023

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 Expiration Date: 02/15/2025
• Device Model Number: 02.07.0036RP
• Device Catalogue Number: 02.07.0036RP
• Device Lot Number: 2000634
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 02/07/2023
• Initial Report FDA Received Date: 03/08/2023
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 02/15/2025
• 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: 73 YR
• Patient Sex: Male
• Patient Weight: 138 KG